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1da177e4 LT |
1 | /* |
2 | * Disk Array driver for HP SA 5xxx and 6xxx Controllers | |
3de0a70b | 3 | * Copyright 2000, 2005 Hewlett-Packard Development Company, L.P. |
1da177e4 LT |
4 | * |
5 | * This program is free software; you can redistribute it and/or modify | |
6 | * it under the terms of the GNU General Public License as published by | |
7 | * the Free Software Foundation; either version 2 of the License, or | |
8 | * (at your option) any later version. | |
9 | * | |
10 | * This program is distributed in the hope that it will be useful, | |
11 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or | |
13 | * NON INFRINGEMENT. See the GNU General Public License for more details. | |
14 | * | |
15 | * You should have received a copy of the GNU General Public License | |
16 | * along with this program; if not, write to the Free Software | |
17 | * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. | |
18 | * | |
19 | * Questions/Comments/Bugfixes to iss_storagedev@hp.com | |
20 | * | |
21 | */ | |
22 | ||
23 | #include <linux/config.h> /* CONFIG_PROC_FS */ | |
24 | #include <linux/module.h> | |
25 | #include <linux/interrupt.h> | |
26 | #include <linux/types.h> | |
27 | #include <linux/pci.h> | |
28 | #include <linux/kernel.h> | |
29 | #include <linux/slab.h> | |
30 | #include <linux/delay.h> | |
31 | #include <linux/major.h> | |
32 | #include <linux/fs.h> | |
33 | #include <linux/bio.h> | |
34 | #include <linux/blkpg.h> | |
35 | #include <linux/timer.h> | |
36 | #include <linux/proc_fs.h> | |
37 | #include <linux/init.h> | |
38 | #include <linux/hdreg.h> | |
39 | #include <linux/spinlock.h> | |
40 | #include <linux/compat.h> | |
41 | #include <asm/uaccess.h> | |
42 | #include <asm/io.h> | |
43 | ||
eb0df996 | 44 | #include <linux/dma-mapping.h> |
1da177e4 LT |
45 | #include <linux/blkdev.h> |
46 | #include <linux/genhd.h> | |
47 | #include <linux/completion.h> | |
48 | ||
49 | #define CCISS_DRIVER_VERSION(maj,min,submin) ((maj<<16)|(min<<8)|(submin)) | |
9dc7a86e MM |
50 | #define DRIVER_NAME "HP CISS Driver (v 2.6.8)" |
51 | #define DRIVER_VERSION CCISS_DRIVER_VERSION(2,6,8) | |
1da177e4 LT |
52 | |
53 | /* Embedded module documentation macros - see modules.h */ | |
54 | MODULE_AUTHOR("Hewlett-Packard Company"); | |
9dc7a86e | 55 | MODULE_DESCRIPTION("Driver for HP Controller SA5xxx SA6xxx version 2.6.8"); |
1da177e4 | 56 | MODULE_SUPPORTED_DEVICE("HP SA5i SA5i+ SA532 SA5300 SA5312 SA641 SA642 SA6400" |
9dc7a86e | 57 | " SA6i P600 P800 P400 P400i E200 E200i"); |
1da177e4 LT |
58 | MODULE_LICENSE("GPL"); |
59 | ||
60 | #include "cciss_cmd.h" | |
61 | #include "cciss.h" | |
62 | #include <linux/cciss_ioctl.h> | |
63 | ||
64 | /* define the PCI info for the cards we can control */ | |
65 | static const struct pci_device_id cciss_pci_device_id[] = { | |
66 | { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISS, | |
67 | 0x0E11, 0x4070, 0, 0, 0}, | |
68 | { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, | |
69 | 0x0E11, 0x4080, 0, 0, 0}, | |
70 | { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, | |
71 | 0x0E11, 0x4082, 0, 0, 0}, | |
72 | { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSB, | |
73 | 0x0E11, 0x4083, 0, 0, 0}, | |
74 | { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, | |
75 | 0x0E11, 0x409A, 0, 0, 0}, | |
76 | { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, | |
77 | 0x0E11, 0x409B, 0, 0, 0}, | |
78 | { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, | |
79 | 0x0E11, 0x409C, 0, 0, 0}, | |
80 | { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, | |
81 | 0x0E11, 0x409D, 0, 0, 0}, | |
82 | { PCI_VENDOR_ID_COMPAQ, PCI_DEVICE_ID_COMPAQ_CISSC, | |
83 | 0x0E11, 0x4091, 0, 0, 0}, | |
84 | { PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSA, | |
85 | 0x103C, 0x3225, 0, 0, 0}, | |
9dc7a86e | 86 | { PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, |
1da177e4 | 87 | 0x103c, 0x3223, 0, 0, 0}, |
3de0a70b | 88 | { PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, |
9dc7a86e | 89 | 0x103c, 0x3234, 0, 0, 0}, |
3de0a70b | 90 | { PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSC, |
9dc7a86e MM |
91 | 0x103c, 0x3235, 0, 0, 0}, |
92 | { PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, | |
93 | 0x103c, 0x3211, 0, 0, 0}, | |
94 | { PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, | |
95 | 0x103c, 0x3212, 0, 0, 0}, | |
96 | { PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, | |
97 | 0x103c, 0x3213, 0, 0, 0}, | |
98 | { PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, | |
99 | 0x103c, 0x3214, 0, 0, 0}, | |
100 | { PCI_VENDOR_ID_HP, PCI_DEVICE_ID_HP_CISSD, | |
101 | 0x103c, 0x3215, 0, 0, 0}, | |
1da177e4 LT |
102 | {0,} |
103 | }; | |
104 | MODULE_DEVICE_TABLE(pci, cciss_pci_device_id); | |
105 | ||
106 | #define NR_PRODUCTS (sizeof(products)/sizeof(struct board_type)) | |
107 | ||
108 | /* board_id = Subsystem Device ID & Vendor ID | |
109 | * product = Marketing Name for the board | |
110 | * access = Address of the struct of function pointers | |
111 | */ | |
112 | static struct board_type products[] = { | |
113 | { 0x40700E11, "Smart Array 5300", &SA5_access }, | |
114 | { 0x40800E11, "Smart Array 5i", &SA5B_access}, | |
115 | { 0x40820E11, "Smart Array 532", &SA5B_access}, | |
116 | { 0x40830E11, "Smart Array 5312", &SA5B_access}, | |
117 | { 0x409A0E11, "Smart Array 641", &SA5_access}, | |
118 | { 0x409B0E11, "Smart Array 642", &SA5_access}, | |
119 | { 0x409C0E11, "Smart Array 6400", &SA5_access}, | |
120 | { 0x409D0E11, "Smart Array 6400 EM", &SA5_access}, | |
121 | { 0x40910E11, "Smart Array 6i", &SA5_access}, | |
122 | { 0x3225103C, "Smart Array P600", &SA5_access}, | |
123 | { 0x3223103C, "Smart Array P800", &SA5_access}, | |
9dc7a86e MM |
124 | { 0x3234103C, "Smart Array P400", &SA5_access}, |
125 | { 0x3235103C, "Smart Array P400i", &SA5_access}, | |
126 | { 0x3211103C, "Smart Array E200i", &SA5_access}, | |
127 | { 0x3212103C, "Smart Array E200", &SA5_access}, | |
128 | { 0x3213103C, "Smart Array E200i", &SA5_access}, | |
129 | { 0x3214103C, "Smart Array E200i", &SA5_access}, | |
130 | { 0x3215103C, "Smart Array E200i", &SA5_access}, | |
1da177e4 LT |
131 | }; |
132 | ||
133 | /* How long to wait (in millesconds) for board to go into simple mode */ | |
134 | #define MAX_CONFIG_WAIT 30000 | |
135 | #define MAX_IOCTL_CONFIG_WAIT 1000 | |
136 | ||
137 | /*define how many times we will try a command because of bus resets */ | |
138 | #define MAX_CMD_RETRIES 3 | |
139 | ||
140 | #define READ_AHEAD 1024 | |
141 | #define NR_CMDS 384 /* #commands that can be outstanding */ | |
142 | #define MAX_CTLR 32 | |
143 | ||
144 | /* Originally cciss driver only supports 8 major numbers */ | |
145 | #define MAX_CTLR_ORIG 8 | |
146 | ||
147 | ||
1da177e4 LT |
148 | static ctlr_info_t *hba[MAX_CTLR]; |
149 | ||
150 | static void do_cciss_request(request_queue_t *q); | |
3da8b713 | 151 | static irqreturn_t do_cciss_intr(int irq, void *dev_id, struct pt_regs *regs); |
1da177e4 LT |
152 | static int cciss_open(struct inode *inode, struct file *filep); |
153 | static int cciss_release(struct inode *inode, struct file *filep); | |
154 | static int cciss_ioctl(struct inode *inode, struct file *filep, | |
155 | unsigned int cmd, unsigned long arg); | |
156 | ||
157 | static int revalidate_allvol(ctlr_info_t *host); | |
158 | static int cciss_revalidate(struct gendisk *disk); | |
ddd47442 MM |
159 | static int rebuild_lun_table(ctlr_info_t *h, struct gendisk *del_disk); |
160 | static int deregister_disk(struct gendisk *disk, drive_info_struct *drv, int clear_all); | |
1da177e4 | 161 | |
ddd47442 MM |
162 | static void cciss_read_capacity(int ctlr, int logvol, ReadCapdata_struct *buf, |
163 | int withirq, unsigned int *total_size, unsigned int *block_size); | |
164 | static void cciss_geometry_inquiry(int ctlr, int logvol, | |
165 | int withirq, unsigned int total_size, | |
166 | unsigned int block_size, InquiryData_struct *inq_buff, | |
167 | drive_info_struct *drv); | |
1da177e4 LT |
168 | static void cciss_getgeometry(int cntl_num); |
169 | ||
170 | static void start_io( ctlr_info_t *h); | |
171 | static int sendcmd( __u8 cmd, int ctlr, void *buff, size_t size, | |
172 | unsigned int use_unit_num, unsigned int log_unit, __u8 page_code, | |
173 | unsigned char *scsi3addr, int cmd_type); | |
ddd47442 MM |
174 | static int sendcmd_withirq(__u8 cmd, int ctlr, void *buff, size_t size, |
175 | unsigned int use_unit_num, unsigned int log_unit, __u8 page_code, | |
176 | int cmd_type); | |
1da177e4 | 177 | |
33079b21 MM |
178 | static void fail_all_cmds(unsigned long ctlr); |
179 | ||
1da177e4 LT |
180 | #ifdef CONFIG_PROC_FS |
181 | static int cciss_proc_get_info(char *buffer, char **start, off_t offset, | |
182 | int length, int *eof, void *data); | |
183 | static void cciss_procinit(int i); | |
184 | #else | |
185 | static void cciss_procinit(int i) {} | |
186 | #endif /* CONFIG_PROC_FS */ | |
187 | ||
188 | #ifdef CONFIG_COMPAT | |
189 | static long cciss_compat_ioctl(struct file *f, unsigned cmd, unsigned long arg); | |
190 | #endif | |
191 | ||
192 | static struct block_device_operations cciss_fops = { | |
193 | .owner = THIS_MODULE, | |
194 | .open = cciss_open, | |
195 | .release = cciss_release, | |
196 | .ioctl = cciss_ioctl, | |
197 | #ifdef CONFIG_COMPAT | |
198 | .compat_ioctl = cciss_compat_ioctl, | |
199 | #endif | |
200 | .revalidate_disk= cciss_revalidate, | |
201 | }; | |
202 | ||
203 | /* | |
204 | * Enqueuing and dequeuing functions for cmdlists. | |
205 | */ | |
206 | static inline void addQ(CommandList_struct **Qptr, CommandList_struct *c) | |
207 | { | |
208 | if (*Qptr == NULL) { | |
209 | *Qptr = c; | |
210 | c->next = c->prev = c; | |
211 | } else { | |
212 | c->prev = (*Qptr)->prev; | |
213 | c->next = (*Qptr); | |
214 | (*Qptr)->prev->next = c; | |
215 | (*Qptr)->prev = c; | |
216 | } | |
217 | } | |
218 | ||
219 | static inline CommandList_struct *removeQ(CommandList_struct **Qptr, | |
220 | CommandList_struct *c) | |
221 | { | |
222 | if (c && c->next != c) { | |
223 | if (*Qptr == c) *Qptr = c->next; | |
224 | c->prev->next = c->next; | |
225 | c->next->prev = c->prev; | |
226 | } else { | |
227 | *Qptr = NULL; | |
228 | } | |
229 | return c; | |
230 | } | |
231 | ||
232 | #include "cciss_scsi.c" /* For SCSI tape support */ | |
233 | ||
234 | #ifdef CONFIG_PROC_FS | |
235 | ||
236 | /* | |
237 | * Report information about this controller. | |
238 | */ | |
239 | #define ENG_GIG 1000000000 | |
240 | #define ENG_GIG_FACTOR (ENG_GIG/512) | |
241 | #define RAID_UNKNOWN 6 | |
242 | static const char *raid_label[] = {"0","4","1(1+0)","5","5+1","ADG", | |
243 | "UNKNOWN"}; | |
244 | ||
245 | static struct proc_dir_entry *proc_cciss; | |
246 | ||
247 | static int cciss_proc_get_info(char *buffer, char **start, off_t offset, | |
248 | int length, int *eof, void *data) | |
249 | { | |
250 | off_t pos = 0; | |
251 | off_t len = 0; | |
252 | int size, i, ctlr; | |
253 | ctlr_info_t *h = (ctlr_info_t*)data; | |
254 | drive_info_struct *drv; | |
255 | unsigned long flags; | |
256 | sector_t vol_sz, vol_sz_frac; | |
257 | ||
258 | ctlr = h->ctlr; | |
259 | ||
260 | /* prevent displaying bogus info during configuration | |
261 | * or deconfiguration of a logical volume | |
262 | */ | |
263 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
264 | if (h->busy_configuring) { | |
265 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
266 | return -EBUSY; | |
267 | } | |
268 | h->busy_configuring = 1; | |
269 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
270 | ||
271 | size = sprintf(buffer, "%s: HP %s Controller\n" | |
272 | "Board ID: 0x%08lx\n" | |
273 | "Firmware Version: %c%c%c%c\n" | |
274 | "IRQ: %d\n" | |
275 | "Logical drives: %d\n" | |
276 | "Current Q depth: %d\n" | |
277 | "Current # commands on controller: %d\n" | |
278 | "Max Q depth since init: %d\n" | |
279 | "Max # commands on controller since init: %d\n" | |
280 | "Max SG entries since init: %d\n\n", | |
281 | h->devname, | |
282 | h->product_name, | |
283 | (unsigned long)h->board_id, | |
284 | h->firm_ver[0], h->firm_ver[1], h->firm_ver[2], h->firm_ver[3], | |
285 | (unsigned int)h->intr, | |
286 | h->num_luns, | |
287 | h->Qdepth, h->commands_outstanding, | |
288 | h->maxQsinceinit, h->max_outstanding, h->maxSG); | |
289 | ||
290 | pos += size; len += size; | |
291 | cciss_proc_tape_report(ctlr, buffer, &pos, &len); | |
292 | for(i=0; i<=h->highest_lun; i++) { | |
293 | ||
294 | drv = &h->drv[i]; | |
ddd47442 | 295 | if (drv->heads == 0) |
1da177e4 LT |
296 | continue; |
297 | ||
298 | vol_sz = drv->nr_blocks; | |
299 | vol_sz_frac = sector_div(vol_sz, ENG_GIG_FACTOR); | |
300 | vol_sz_frac *= 100; | |
301 | sector_div(vol_sz_frac, ENG_GIG_FACTOR); | |
302 | ||
303 | if (drv->raid_level > 5) | |
304 | drv->raid_level = RAID_UNKNOWN; | |
305 | size = sprintf(buffer+len, "cciss/c%dd%d:" | |
306 | "\t%4u.%02uGB\tRAID %s\n", | |
307 | ctlr, i, (int)vol_sz, (int)vol_sz_frac, | |
308 | raid_label[drv->raid_level]); | |
309 | pos += size; len += size; | |
310 | } | |
311 | ||
312 | *eof = 1; | |
313 | *start = buffer+offset; | |
314 | len -= offset; | |
315 | if (len>length) | |
316 | len = length; | |
317 | h->busy_configuring = 0; | |
318 | return len; | |
319 | } | |
320 | ||
321 | static int | |
322 | cciss_proc_write(struct file *file, const char __user *buffer, | |
323 | unsigned long count, void *data) | |
324 | { | |
325 | unsigned char cmd[80]; | |
326 | int len; | |
327 | #ifdef CONFIG_CISS_SCSI_TAPE | |
328 | ctlr_info_t *h = (ctlr_info_t *) data; | |
329 | int rc; | |
330 | #endif | |
331 | ||
332 | if (count > sizeof(cmd)-1) return -EINVAL; | |
333 | if (copy_from_user(cmd, buffer, count)) return -EFAULT; | |
334 | cmd[count] = '\0'; | |
335 | len = strlen(cmd); // above 3 lines ensure safety | |
336 | if (len && cmd[len-1] == '\n') | |
337 | cmd[--len] = '\0'; | |
338 | # ifdef CONFIG_CISS_SCSI_TAPE | |
339 | if (strcmp("engage scsi", cmd)==0) { | |
340 | rc = cciss_engage_scsi(h->ctlr); | |
341 | if (rc != 0) return -rc; | |
342 | return count; | |
343 | } | |
344 | /* might be nice to have "disengage" too, but it's not | |
345 | safely possible. (only 1 module use count, lock issues.) */ | |
346 | # endif | |
347 | return -EINVAL; | |
348 | } | |
349 | ||
350 | /* | |
351 | * Get us a file in /proc/cciss that says something about each controller. | |
352 | * Create /proc/cciss if it doesn't exist yet. | |
353 | */ | |
354 | static void __devinit cciss_procinit(int i) | |
355 | { | |
356 | struct proc_dir_entry *pde; | |
357 | ||
358 | if (proc_cciss == NULL) { | |
359 | proc_cciss = proc_mkdir("cciss", proc_root_driver); | |
360 | if (!proc_cciss) | |
361 | return; | |
362 | } | |
363 | ||
364 | pde = create_proc_read_entry(hba[i]->devname, | |
365 | S_IWUSR | S_IRUSR | S_IRGRP | S_IROTH, | |
366 | proc_cciss, cciss_proc_get_info, hba[i]); | |
367 | pde->write_proc = cciss_proc_write; | |
368 | } | |
369 | #endif /* CONFIG_PROC_FS */ | |
370 | ||
371 | /* | |
372 | * For operations that cannot sleep, a command block is allocated at init, | |
373 | * and managed by cmd_alloc() and cmd_free() using a simple bitmap to track | |
374 | * which ones are free or in use. For operations that can wait for kmalloc | |
375 | * to possible sleep, this routine can be called with get_from_pool set to 0. | |
376 | * cmd_free() MUST be called with a got_from_pool set to 0 if cmd_alloc was. | |
377 | */ | |
378 | static CommandList_struct * cmd_alloc(ctlr_info_t *h, int get_from_pool) | |
379 | { | |
380 | CommandList_struct *c; | |
381 | int i; | |
382 | u64bit temp64; | |
383 | dma_addr_t cmd_dma_handle, err_dma_handle; | |
384 | ||
385 | if (!get_from_pool) | |
386 | { | |
387 | c = (CommandList_struct *) pci_alloc_consistent( | |
388 | h->pdev, sizeof(CommandList_struct), &cmd_dma_handle); | |
389 | if(c==NULL) | |
390 | return NULL; | |
391 | memset(c, 0, sizeof(CommandList_struct)); | |
392 | ||
33079b21 MM |
393 | c->cmdindex = -1; |
394 | ||
1da177e4 LT |
395 | c->err_info = (ErrorInfo_struct *)pci_alloc_consistent( |
396 | h->pdev, sizeof(ErrorInfo_struct), | |
397 | &err_dma_handle); | |
398 | ||
399 | if (c->err_info == NULL) | |
400 | { | |
401 | pci_free_consistent(h->pdev, | |
402 | sizeof(CommandList_struct), c, cmd_dma_handle); | |
403 | return NULL; | |
404 | } | |
405 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); | |
406 | } else /* get it out of the controllers pool */ | |
407 | { | |
408 | do { | |
409 | i = find_first_zero_bit(h->cmd_pool_bits, NR_CMDS); | |
410 | if (i == NR_CMDS) | |
411 | return NULL; | |
412 | } while(test_and_set_bit(i & (BITS_PER_LONG - 1), h->cmd_pool_bits+(i/BITS_PER_LONG)) != 0); | |
413 | #ifdef CCISS_DEBUG | |
414 | printk(KERN_DEBUG "cciss: using command buffer %d\n", i); | |
415 | #endif | |
416 | c = h->cmd_pool + i; | |
417 | memset(c, 0, sizeof(CommandList_struct)); | |
418 | cmd_dma_handle = h->cmd_pool_dhandle | |
419 | + i*sizeof(CommandList_struct); | |
420 | c->err_info = h->errinfo_pool + i; | |
421 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); | |
422 | err_dma_handle = h->errinfo_pool_dhandle | |
423 | + i*sizeof(ErrorInfo_struct); | |
424 | h->nr_allocs++; | |
33079b21 MM |
425 | |
426 | c->cmdindex = i; | |
1da177e4 LT |
427 | } |
428 | ||
429 | c->busaddr = (__u32) cmd_dma_handle; | |
430 | temp64.val = (__u64) err_dma_handle; | |
431 | c->ErrDesc.Addr.lower = temp64.val32.lower; | |
432 | c->ErrDesc.Addr.upper = temp64.val32.upper; | |
433 | c->ErrDesc.Len = sizeof(ErrorInfo_struct); | |
434 | ||
435 | c->ctlr = h->ctlr; | |
436 | return c; | |
437 | ||
438 | ||
439 | } | |
440 | ||
441 | /* | |
442 | * Frees a command block that was previously allocated with cmd_alloc(). | |
443 | */ | |
444 | static void cmd_free(ctlr_info_t *h, CommandList_struct *c, int got_from_pool) | |
445 | { | |
446 | int i; | |
447 | u64bit temp64; | |
448 | ||
449 | if( !got_from_pool) | |
450 | { | |
451 | temp64.val32.lower = c->ErrDesc.Addr.lower; | |
452 | temp64.val32.upper = c->ErrDesc.Addr.upper; | |
453 | pci_free_consistent(h->pdev, sizeof(ErrorInfo_struct), | |
454 | c->err_info, (dma_addr_t) temp64.val); | |
455 | pci_free_consistent(h->pdev, sizeof(CommandList_struct), | |
456 | c, (dma_addr_t) c->busaddr); | |
457 | } else | |
458 | { | |
459 | i = c - h->cmd_pool; | |
460 | clear_bit(i&(BITS_PER_LONG-1), h->cmd_pool_bits+(i/BITS_PER_LONG)); | |
461 | h->nr_frees++; | |
462 | } | |
463 | } | |
464 | ||
465 | static inline ctlr_info_t *get_host(struct gendisk *disk) | |
466 | { | |
467 | return disk->queue->queuedata; | |
468 | } | |
469 | ||
470 | static inline drive_info_struct *get_drv(struct gendisk *disk) | |
471 | { | |
472 | return disk->private_data; | |
473 | } | |
474 | ||
475 | /* | |
476 | * Open. Make sure the device is really there. | |
477 | */ | |
478 | static int cciss_open(struct inode *inode, struct file *filep) | |
479 | { | |
480 | ctlr_info_t *host = get_host(inode->i_bdev->bd_disk); | |
481 | drive_info_struct *drv = get_drv(inode->i_bdev->bd_disk); | |
482 | ||
483 | #ifdef CCISS_DEBUG | |
484 | printk(KERN_DEBUG "cciss_open %s\n", inode->i_bdev->bd_disk->disk_name); | |
485 | #endif /* CCISS_DEBUG */ | |
486 | ||
ddd47442 MM |
487 | if (host->busy_initializing || drv->busy_configuring) |
488 | return -EBUSY; | |
1da177e4 LT |
489 | /* |
490 | * Root is allowed to open raw volume zero even if it's not configured | |
491 | * so array config can still work. Root is also allowed to open any | |
492 | * volume that has a LUN ID, so it can issue IOCTL to reread the | |
493 | * disk information. I don't think I really like this | |
494 | * but I'm already using way to many device nodes to claim another one | |
495 | * for "raw controller". | |
496 | */ | |
497 | if (drv->nr_blocks == 0) { | |
498 | if (iminor(inode) != 0) { /* not node 0? */ | |
499 | /* if not node 0 make sure it is a partition = 0 */ | |
500 | if (iminor(inode) & 0x0f) { | |
501 | return -ENXIO; | |
502 | /* if it is, make sure we have a LUN ID */ | |
503 | } else if (drv->LunID == 0) { | |
504 | return -ENXIO; | |
505 | } | |
506 | } | |
507 | if (!capable(CAP_SYS_ADMIN)) | |
508 | return -EPERM; | |
509 | } | |
510 | drv->usage_count++; | |
511 | host->usage_count++; | |
512 | return 0; | |
513 | } | |
514 | /* | |
515 | * Close. Sync first. | |
516 | */ | |
517 | static int cciss_release(struct inode *inode, struct file *filep) | |
518 | { | |
519 | ctlr_info_t *host = get_host(inode->i_bdev->bd_disk); | |
520 | drive_info_struct *drv = get_drv(inode->i_bdev->bd_disk); | |
521 | ||
522 | #ifdef CCISS_DEBUG | |
523 | printk(KERN_DEBUG "cciss_release %s\n", inode->i_bdev->bd_disk->disk_name); | |
524 | #endif /* CCISS_DEBUG */ | |
525 | ||
526 | drv->usage_count--; | |
527 | host->usage_count--; | |
528 | return 0; | |
529 | } | |
530 | ||
531 | #ifdef CONFIG_COMPAT | |
532 | ||
533 | static int do_ioctl(struct file *f, unsigned cmd, unsigned long arg) | |
534 | { | |
535 | int ret; | |
536 | lock_kernel(); | |
537 | ret = cciss_ioctl(f->f_dentry->d_inode, f, cmd, arg); | |
538 | unlock_kernel(); | |
539 | return ret; | |
540 | } | |
541 | ||
542 | static int cciss_ioctl32_passthru(struct file *f, unsigned cmd, unsigned long arg); | |
543 | static int cciss_ioctl32_big_passthru(struct file *f, unsigned cmd, unsigned long arg); | |
544 | ||
545 | static long cciss_compat_ioctl(struct file *f, unsigned cmd, unsigned long arg) | |
546 | { | |
547 | switch (cmd) { | |
548 | case CCISS_GETPCIINFO: | |
549 | case CCISS_GETINTINFO: | |
550 | case CCISS_SETINTINFO: | |
551 | case CCISS_GETNODENAME: | |
552 | case CCISS_SETNODENAME: | |
553 | case CCISS_GETHEARTBEAT: | |
554 | case CCISS_GETBUSTYPES: | |
555 | case CCISS_GETFIRMVER: | |
556 | case CCISS_GETDRIVVER: | |
557 | case CCISS_REVALIDVOLS: | |
558 | case CCISS_DEREGDISK: | |
559 | case CCISS_REGNEWDISK: | |
560 | case CCISS_REGNEWD: | |
561 | case CCISS_RESCANDISK: | |
562 | case CCISS_GETLUNINFO: | |
563 | return do_ioctl(f, cmd, arg); | |
564 | ||
565 | case CCISS_PASSTHRU32: | |
566 | return cciss_ioctl32_passthru(f, cmd, arg); | |
567 | case CCISS_BIG_PASSTHRU32: | |
568 | return cciss_ioctl32_big_passthru(f, cmd, arg); | |
569 | ||
570 | default: | |
571 | return -ENOIOCTLCMD; | |
572 | } | |
573 | } | |
574 | ||
575 | static int cciss_ioctl32_passthru(struct file *f, unsigned cmd, unsigned long arg) | |
576 | { | |
577 | IOCTL32_Command_struct __user *arg32 = | |
578 | (IOCTL32_Command_struct __user *) arg; | |
579 | IOCTL_Command_struct arg64; | |
580 | IOCTL_Command_struct __user *p = compat_alloc_user_space(sizeof(arg64)); | |
581 | int err; | |
582 | u32 cp; | |
583 | ||
584 | err = 0; | |
585 | err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info, sizeof(arg64.LUN_info)); | |
586 | err |= copy_from_user(&arg64.Request, &arg32->Request, sizeof(arg64.Request)); | |
587 | err |= copy_from_user(&arg64.error_info, &arg32->error_info, sizeof(arg64.error_info)); | |
588 | err |= get_user(arg64.buf_size, &arg32->buf_size); | |
589 | err |= get_user(cp, &arg32->buf); | |
590 | arg64.buf = compat_ptr(cp); | |
591 | err |= copy_to_user(p, &arg64, sizeof(arg64)); | |
592 | ||
593 | if (err) | |
594 | return -EFAULT; | |
595 | ||
596 | err = do_ioctl(f, CCISS_PASSTHRU, (unsigned long) p); | |
597 | if (err) | |
598 | return err; | |
599 | err |= copy_in_user(&arg32->error_info, &p->error_info, sizeof(arg32->error_info)); | |
600 | if (err) | |
601 | return -EFAULT; | |
602 | return err; | |
603 | } | |
604 | ||
605 | static int cciss_ioctl32_big_passthru(struct file *file, unsigned cmd, unsigned long arg) | |
606 | { | |
607 | BIG_IOCTL32_Command_struct __user *arg32 = | |
608 | (BIG_IOCTL32_Command_struct __user *) arg; | |
609 | BIG_IOCTL_Command_struct arg64; | |
610 | BIG_IOCTL_Command_struct __user *p = compat_alloc_user_space(sizeof(arg64)); | |
611 | int err; | |
612 | u32 cp; | |
613 | ||
614 | err = 0; | |
615 | err |= copy_from_user(&arg64.LUN_info, &arg32->LUN_info, sizeof(arg64.LUN_info)); | |
616 | err |= copy_from_user(&arg64.Request, &arg32->Request, sizeof(arg64.Request)); | |
617 | err |= copy_from_user(&arg64.error_info, &arg32->error_info, sizeof(arg64.error_info)); | |
618 | err |= get_user(arg64.buf_size, &arg32->buf_size); | |
619 | err |= get_user(arg64.malloc_size, &arg32->malloc_size); | |
620 | err |= get_user(cp, &arg32->buf); | |
621 | arg64.buf = compat_ptr(cp); | |
622 | err |= copy_to_user(p, &arg64, sizeof(arg64)); | |
623 | ||
624 | if (err) | |
625 | return -EFAULT; | |
626 | ||
627 | err = do_ioctl(file, CCISS_BIG_PASSTHRU, (unsigned long) p); | |
628 | if (err) | |
629 | return err; | |
630 | err |= copy_in_user(&arg32->error_info, &p->error_info, sizeof(arg32->error_info)); | |
631 | if (err) | |
632 | return -EFAULT; | |
633 | return err; | |
634 | } | |
635 | #endif | |
636 | /* | |
637 | * ioctl | |
638 | */ | |
639 | static int cciss_ioctl(struct inode *inode, struct file *filep, | |
640 | unsigned int cmd, unsigned long arg) | |
641 | { | |
642 | struct block_device *bdev = inode->i_bdev; | |
643 | struct gendisk *disk = bdev->bd_disk; | |
644 | ctlr_info_t *host = get_host(disk); | |
645 | drive_info_struct *drv = get_drv(disk); | |
646 | int ctlr = host->ctlr; | |
647 | void __user *argp = (void __user *)arg; | |
648 | ||
649 | #ifdef CCISS_DEBUG | |
650 | printk(KERN_DEBUG "cciss_ioctl: Called with cmd=%x %lx\n", cmd, arg); | |
651 | #endif /* CCISS_DEBUG */ | |
652 | ||
653 | switch(cmd) { | |
654 | case HDIO_GETGEO: | |
655 | { | |
656 | struct hd_geometry driver_geo; | |
657 | if (drv->cylinders) { | |
658 | driver_geo.heads = drv->heads; | |
659 | driver_geo.sectors = drv->sectors; | |
660 | driver_geo.cylinders = drv->cylinders; | |
661 | } else | |
662 | return -ENXIO; | |
663 | driver_geo.start= get_start_sect(inode->i_bdev); | |
664 | if (copy_to_user(argp, &driver_geo, sizeof(struct hd_geometry))) | |
665 | return -EFAULT; | |
666 | return(0); | |
667 | } | |
668 | ||
669 | case CCISS_GETPCIINFO: | |
670 | { | |
671 | cciss_pci_info_struct pciinfo; | |
672 | ||
673 | if (!arg) return -EINVAL; | |
cd6fb584 | 674 | pciinfo.domain = pci_domain_nr(host->pdev->bus); |
1da177e4 LT |
675 | pciinfo.bus = host->pdev->bus->number; |
676 | pciinfo.dev_fn = host->pdev->devfn; | |
677 | pciinfo.board_id = host->board_id; | |
678 | if (copy_to_user(argp, &pciinfo, sizeof( cciss_pci_info_struct ))) | |
679 | return -EFAULT; | |
680 | return(0); | |
681 | } | |
682 | case CCISS_GETINTINFO: | |
683 | { | |
684 | cciss_coalint_struct intinfo; | |
685 | if (!arg) return -EINVAL; | |
686 | intinfo.delay = readl(&host->cfgtable->HostWrite.CoalIntDelay); | |
687 | intinfo.count = readl(&host->cfgtable->HostWrite.CoalIntCount); | |
688 | if (copy_to_user(argp, &intinfo, sizeof( cciss_coalint_struct ))) | |
689 | return -EFAULT; | |
690 | return(0); | |
691 | } | |
692 | case CCISS_SETINTINFO: | |
693 | { | |
694 | cciss_coalint_struct intinfo; | |
695 | unsigned long flags; | |
696 | int i; | |
697 | ||
698 | if (!arg) return -EINVAL; | |
699 | if (!capable(CAP_SYS_ADMIN)) return -EPERM; | |
700 | if (copy_from_user(&intinfo, argp, sizeof( cciss_coalint_struct))) | |
701 | return -EFAULT; | |
702 | if ( (intinfo.delay == 0 ) && (intinfo.count == 0)) | |
703 | ||
704 | { | |
705 | // printk("cciss_ioctl: delay and count cannot be 0\n"); | |
706 | return( -EINVAL); | |
707 | } | |
708 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
709 | /* Update the field, and then ring the doorbell */ | |
710 | writel( intinfo.delay, | |
711 | &(host->cfgtable->HostWrite.CoalIntDelay)); | |
712 | writel( intinfo.count, | |
713 | &(host->cfgtable->HostWrite.CoalIntCount)); | |
714 | writel( CFGTBL_ChangeReq, host->vaddr + SA5_DOORBELL); | |
715 | ||
716 | for(i=0;i<MAX_IOCTL_CONFIG_WAIT;i++) { | |
717 | if (!(readl(host->vaddr + SA5_DOORBELL) | |
718 | & CFGTBL_ChangeReq)) | |
719 | break; | |
720 | /* delay and try again */ | |
721 | udelay(1000); | |
722 | } | |
723 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
724 | if (i >= MAX_IOCTL_CONFIG_WAIT) | |
725 | return -EAGAIN; | |
726 | return(0); | |
727 | } | |
728 | case CCISS_GETNODENAME: | |
729 | { | |
730 | NodeName_type NodeName; | |
731 | int i; | |
732 | ||
733 | if (!arg) return -EINVAL; | |
734 | for(i=0;i<16;i++) | |
735 | NodeName[i] = readb(&host->cfgtable->ServerName[i]); | |
736 | if (copy_to_user(argp, NodeName, sizeof( NodeName_type))) | |
737 | return -EFAULT; | |
738 | return(0); | |
739 | } | |
740 | case CCISS_SETNODENAME: | |
741 | { | |
742 | NodeName_type NodeName; | |
743 | unsigned long flags; | |
744 | int i; | |
745 | ||
746 | if (!arg) return -EINVAL; | |
747 | if (!capable(CAP_SYS_ADMIN)) return -EPERM; | |
748 | ||
749 | if (copy_from_user(NodeName, argp, sizeof( NodeName_type))) | |
750 | return -EFAULT; | |
751 | ||
752 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
753 | ||
754 | /* Update the field, and then ring the doorbell */ | |
755 | for(i=0;i<16;i++) | |
756 | writeb( NodeName[i], &host->cfgtable->ServerName[i]); | |
757 | ||
758 | writel( CFGTBL_ChangeReq, host->vaddr + SA5_DOORBELL); | |
759 | ||
760 | for(i=0;i<MAX_IOCTL_CONFIG_WAIT;i++) { | |
761 | if (!(readl(host->vaddr + SA5_DOORBELL) | |
762 | & CFGTBL_ChangeReq)) | |
763 | break; | |
764 | /* delay and try again */ | |
765 | udelay(1000); | |
766 | } | |
767 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
768 | if (i >= MAX_IOCTL_CONFIG_WAIT) | |
769 | return -EAGAIN; | |
770 | return(0); | |
771 | } | |
772 | ||
773 | case CCISS_GETHEARTBEAT: | |
774 | { | |
775 | Heartbeat_type heartbeat; | |
776 | ||
777 | if (!arg) return -EINVAL; | |
778 | heartbeat = readl(&host->cfgtable->HeartBeat); | |
779 | if (copy_to_user(argp, &heartbeat, sizeof( Heartbeat_type))) | |
780 | return -EFAULT; | |
781 | return(0); | |
782 | } | |
783 | case CCISS_GETBUSTYPES: | |
784 | { | |
785 | BusTypes_type BusTypes; | |
786 | ||
787 | if (!arg) return -EINVAL; | |
788 | BusTypes = readl(&host->cfgtable->BusTypes); | |
789 | if (copy_to_user(argp, &BusTypes, sizeof( BusTypes_type) )) | |
790 | return -EFAULT; | |
791 | return(0); | |
792 | } | |
793 | case CCISS_GETFIRMVER: | |
794 | { | |
795 | FirmwareVer_type firmware; | |
796 | ||
797 | if (!arg) return -EINVAL; | |
798 | memcpy(firmware, host->firm_ver, 4); | |
799 | ||
800 | if (copy_to_user(argp, firmware, sizeof( FirmwareVer_type))) | |
801 | return -EFAULT; | |
802 | return(0); | |
803 | } | |
804 | case CCISS_GETDRIVVER: | |
805 | { | |
806 | DriverVer_type DriverVer = DRIVER_VERSION; | |
807 | ||
808 | if (!arg) return -EINVAL; | |
809 | ||
810 | if (copy_to_user(argp, &DriverVer, sizeof( DriverVer_type) )) | |
811 | return -EFAULT; | |
812 | return(0); | |
813 | } | |
814 | ||
815 | case CCISS_REVALIDVOLS: | |
816 | if (bdev != bdev->bd_contains || drv != host->drv) | |
817 | return -ENXIO; | |
818 | return revalidate_allvol(host); | |
819 | ||
820 | case CCISS_GETLUNINFO: { | |
821 | LogvolInfo_struct luninfo; | |
1da177e4 LT |
822 | |
823 | luninfo.LunID = drv->LunID; | |
824 | luninfo.num_opens = drv->usage_count; | |
825 | luninfo.num_parts = 0; | |
1da177e4 LT |
826 | if (copy_to_user(argp, &luninfo, |
827 | sizeof(LogvolInfo_struct))) | |
828 | return -EFAULT; | |
829 | return(0); | |
830 | } | |
831 | case CCISS_DEREGDISK: | |
ddd47442 | 832 | return rebuild_lun_table(host, disk); |
1da177e4 LT |
833 | |
834 | case CCISS_REGNEWD: | |
ddd47442 | 835 | return rebuild_lun_table(host, NULL); |
1da177e4 LT |
836 | |
837 | case CCISS_PASSTHRU: | |
838 | { | |
839 | IOCTL_Command_struct iocommand; | |
840 | CommandList_struct *c; | |
841 | char *buff = NULL; | |
842 | u64bit temp64; | |
843 | unsigned long flags; | |
844 | DECLARE_COMPLETION(wait); | |
845 | ||
846 | if (!arg) return -EINVAL; | |
847 | ||
848 | if (!capable(CAP_SYS_RAWIO)) return -EPERM; | |
849 | ||
850 | if (copy_from_user(&iocommand, argp, sizeof( IOCTL_Command_struct) )) | |
851 | return -EFAULT; | |
852 | if((iocommand.buf_size < 1) && | |
853 | (iocommand.Request.Type.Direction != XFER_NONE)) | |
854 | { | |
855 | return -EINVAL; | |
856 | } | |
857 | #if 0 /* 'buf_size' member is 16-bits, and always smaller than kmalloc limit */ | |
858 | /* Check kmalloc limits */ | |
859 | if(iocommand.buf_size > 128000) | |
860 | return -EINVAL; | |
861 | #endif | |
862 | if(iocommand.buf_size > 0) | |
863 | { | |
864 | buff = kmalloc(iocommand.buf_size, GFP_KERNEL); | |
865 | if( buff == NULL) | |
866 | return -EFAULT; | |
867 | } | |
868 | if (iocommand.Request.Type.Direction == XFER_WRITE) | |
869 | { | |
870 | /* Copy the data into the buffer we created */ | |
871 | if (copy_from_user(buff, iocommand.buf, iocommand.buf_size)) | |
872 | { | |
873 | kfree(buff); | |
874 | return -EFAULT; | |
875 | } | |
876 | } else { | |
877 | memset(buff, 0, iocommand.buf_size); | |
878 | } | |
879 | if ((c = cmd_alloc(host , 0)) == NULL) | |
880 | { | |
881 | kfree(buff); | |
882 | return -ENOMEM; | |
883 | } | |
884 | // Fill in the command type | |
885 | c->cmd_type = CMD_IOCTL_PEND; | |
886 | // Fill in Command Header | |
887 | c->Header.ReplyQueue = 0; // unused in simple mode | |
888 | if( iocommand.buf_size > 0) // buffer to fill | |
889 | { | |
890 | c->Header.SGList = 1; | |
891 | c->Header.SGTotal= 1; | |
892 | } else // no buffers to fill | |
893 | { | |
894 | c->Header.SGList = 0; | |
895 | c->Header.SGTotal= 0; | |
896 | } | |
897 | c->Header.LUN = iocommand.LUN_info; | |
898 | c->Header.Tag.lower = c->busaddr; // use the kernel address the cmd block for tag | |
899 | ||
900 | // Fill in Request block | |
901 | c->Request = iocommand.Request; | |
902 | ||
903 | // Fill in the scatter gather information | |
904 | if (iocommand.buf_size > 0 ) | |
905 | { | |
906 | temp64.val = pci_map_single( host->pdev, buff, | |
907 | iocommand.buf_size, | |
908 | PCI_DMA_BIDIRECTIONAL); | |
909 | c->SG[0].Addr.lower = temp64.val32.lower; | |
910 | c->SG[0].Addr.upper = temp64.val32.upper; | |
911 | c->SG[0].Len = iocommand.buf_size; | |
912 | c->SG[0].Ext = 0; // we are not chaining | |
913 | } | |
914 | c->waiting = &wait; | |
915 | ||
916 | /* Put the request on the tail of the request queue */ | |
917 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
918 | addQ(&host->reqQ, c); | |
919 | host->Qdepth++; | |
920 | start_io(host); | |
921 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
922 | ||
923 | wait_for_completion(&wait); | |
924 | ||
925 | /* unlock the buffers from DMA */ | |
926 | temp64.val32.lower = c->SG[0].Addr.lower; | |
927 | temp64.val32.upper = c->SG[0].Addr.upper; | |
928 | pci_unmap_single( host->pdev, (dma_addr_t) temp64.val, | |
929 | iocommand.buf_size, PCI_DMA_BIDIRECTIONAL); | |
930 | ||
931 | /* Copy the error information out */ | |
932 | iocommand.error_info = *(c->err_info); | |
933 | if ( copy_to_user(argp, &iocommand, sizeof( IOCTL_Command_struct) ) ) | |
934 | { | |
935 | kfree(buff); | |
936 | cmd_free(host, c, 0); | |
937 | return( -EFAULT); | |
938 | } | |
939 | ||
940 | if (iocommand.Request.Type.Direction == XFER_READ) | |
941 | { | |
942 | /* Copy the data out of the buffer we created */ | |
943 | if (copy_to_user(iocommand.buf, buff, iocommand.buf_size)) | |
944 | { | |
945 | kfree(buff); | |
946 | cmd_free(host, c, 0); | |
947 | return -EFAULT; | |
948 | } | |
949 | } | |
950 | kfree(buff); | |
951 | cmd_free(host, c, 0); | |
952 | return(0); | |
953 | } | |
954 | case CCISS_BIG_PASSTHRU: { | |
955 | BIG_IOCTL_Command_struct *ioc; | |
956 | CommandList_struct *c; | |
957 | unsigned char **buff = NULL; | |
958 | int *buff_size = NULL; | |
959 | u64bit temp64; | |
960 | unsigned long flags; | |
961 | BYTE sg_used = 0; | |
962 | int status = 0; | |
963 | int i; | |
964 | DECLARE_COMPLETION(wait); | |
965 | __u32 left; | |
966 | __u32 sz; | |
967 | BYTE __user *data_ptr; | |
968 | ||
969 | if (!arg) | |
970 | return -EINVAL; | |
971 | if (!capable(CAP_SYS_RAWIO)) | |
972 | return -EPERM; | |
973 | ioc = (BIG_IOCTL_Command_struct *) | |
974 | kmalloc(sizeof(*ioc), GFP_KERNEL); | |
975 | if (!ioc) { | |
976 | status = -ENOMEM; | |
977 | goto cleanup1; | |
978 | } | |
979 | if (copy_from_user(ioc, argp, sizeof(*ioc))) { | |
980 | status = -EFAULT; | |
981 | goto cleanup1; | |
982 | } | |
983 | if ((ioc->buf_size < 1) && | |
984 | (ioc->Request.Type.Direction != XFER_NONE)) { | |
985 | status = -EINVAL; | |
986 | goto cleanup1; | |
987 | } | |
988 | /* Check kmalloc limits using all SGs */ | |
989 | if (ioc->malloc_size > MAX_KMALLOC_SIZE) { | |
990 | status = -EINVAL; | |
991 | goto cleanup1; | |
992 | } | |
993 | if (ioc->buf_size > ioc->malloc_size * MAXSGENTRIES) { | |
994 | status = -EINVAL; | |
995 | goto cleanup1; | |
996 | } | |
997 | buff = (unsigned char **) kmalloc(MAXSGENTRIES * | |
998 | sizeof(char *), GFP_KERNEL); | |
999 | if (!buff) { | |
1000 | status = -ENOMEM; | |
1001 | goto cleanup1; | |
1002 | } | |
1003 | memset(buff, 0, MAXSGENTRIES); | |
1004 | buff_size = (int *) kmalloc(MAXSGENTRIES * sizeof(int), | |
1005 | GFP_KERNEL); | |
1006 | if (!buff_size) { | |
1007 | status = -ENOMEM; | |
1008 | goto cleanup1; | |
1009 | } | |
1010 | left = ioc->buf_size; | |
1011 | data_ptr = ioc->buf; | |
1012 | while (left) { | |
1013 | sz = (left > ioc->malloc_size) ? ioc->malloc_size : left; | |
1014 | buff_size[sg_used] = sz; | |
1015 | buff[sg_used] = kmalloc(sz, GFP_KERNEL); | |
1016 | if (buff[sg_used] == NULL) { | |
1017 | status = -ENOMEM; | |
1018 | goto cleanup1; | |
1019 | } | |
15534d38 JA |
1020 | if (ioc->Request.Type.Direction == XFER_WRITE) { |
1021 | if (copy_from_user(buff[sg_used], data_ptr, sz)) { | |
1da177e4 | 1022 | status = -ENOMEM; |
15534d38 JA |
1023 | goto cleanup1; |
1024 | } | |
1da177e4 LT |
1025 | } else { |
1026 | memset(buff[sg_used], 0, sz); | |
1027 | } | |
1028 | left -= sz; | |
1029 | data_ptr += sz; | |
1030 | sg_used++; | |
1031 | } | |
1032 | if ((c = cmd_alloc(host , 0)) == NULL) { | |
1033 | status = -ENOMEM; | |
1034 | goto cleanup1; | |
1035 | } | |
1036 | c->cmd_type = CMD_IOCTL_PEND; | |
1037 | c->Header.ReplyQueue = 0; | |
1038 | ||
1039 | if( ioc->buf_size > 0) { | |
1040 | c->Header.SGList = sg_used; | |
1041 | c->Header.SGTotal= sg_used; | |
1042 | } else { | |
1043 | c->Header.SGList = 0; | |
1044 | c->Header.SGTotal= 0; | |
1045 | } | |
1046 | c->Header.LUN = ioc->LUN_info; | |
1047 | c->Header.Tag.lower = c->busaddr; | |
1048 | ||
1049 | c->Request = ioc->Request; | |
1050 | if (ioc->buf_size > 0 ) { | |
1051 | int i; | |
1052 | for(i=0; i<sg_used; i++) { | |
1053 | temp64.val = pci_map_single( host->pdev, buff[i], | |
1054 | buff_size[i], | |
1055 | PCI_DMA_BIDIRECTIONAL); | |
1056 | c->SG[i].Addr.lower = temp64.val32.lower; | |
1057 | c->SG[i].Addr.upper = temp64.val32.upper; | |
1058 | c->SG[i].Len = buff_size[i]; | |
1059 | c->SG[i].Ext = 0; /* we are not chaining */ | |
1060 | } | |
1061 | } | |
1062 | c->waiting = &wait; | |
1063 | /* Put the request on the tail of the request queue */ | |
1064 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
1065 | addQ(&host->reqQ, c); | |
1066 | host->Qdepth++; | |
1067 | start_io(host); | |
1068 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
1069 | wait_for_completion(&wait); | |
1070 | /* unlock the buffers from DMA */ | |
1071 | for(i=0; i<sg_used; i++) { | |
1072 | temp64.val32.lower = c->SG[i].Addr.lower; | |
1073 | temp64.val32.upper = c->SG[i].Addr.upper; | |
1074 | pci_unmap_single( host->pdev, (dma_addr_t) temp64.val, | |
1075 | buff_size[i], PCI_DMA_BIDIRECTIONAL); | |
1076 | } | |
1077 | /* Copy the error information out */ | |
1078 | ioc->error_info = *(c->err_info); | |
1079 | if (copy_to_user(argp, ioc, sizeof(*ioc))) { | |
1080 | cmd_free(host, c, 0); | |
1081 | status = -EFAULT; | |
1082 | goto cleanup1; | |
1083 | } | |
1084 | if (ioc->Request.Type.Direction == XFER_READ) { | |
1085 | /* Copy the data out of the buffer we created */ | |
1086 | BYTE __user *ptr = ioc->buf; | |
1087 | for(i=0; i< sg_used; i++) { | |
1088 | if (copy_to_user(ptr, buff[i], buff_size[i])) { | |
1089 | cmd_free(host, c, 0); | |
1090 | status = -EFAULT; | |
1091 | goto cleanup1; | |
1092 | } | |
1093 | ptr += buff_size[i]; | |
1094 | } | |
1095 | } | |
1096 | cmd_free(host, c, 0); | |
1097 | status = 0; | |
1098 | cleanup1: | |
1099 | if (buff) { | |
1100 | for(i=0; i<sg_used; i++) | |
6044ec88 | 1101 | kfree(buff[i]); |
1da177e4 LT |
1102 | kfree(buff); |
1103 | } | |
6044ec88 JJ |
1104 | kfree(buff_size); |
1105 | kfree(ioc); | |
1da177e4 LT |
1106 | return(status); |
1107 | } | |
1108 | default: | |
1109 | return -ENOTTY; | |
1110 | } | |
1111 | ||
1112 | } | |
1113 | ||
1114 | /* | |
1115 | * revalidate_allvol is for online array config utilities. After a | |
1116 | * utility reconfigures the drives in the array, it can use this function | |
1117 | * (through an ioctl) to make the driver zap any previous disk structs for | |
1118 | * that controller and get new ones. | |
1119 | * | |
1120 | * Right now I'm using the getgeometry() function to do this, but this | |
1121 | * function should probably be finer grained and allow you to revalidate one | |
1122 | * particualar logical volume (instead of all of them on a particular | |
1123 | * controller). | |
1124 | */ | |
1125 | static int revalidate_allvol(ctlr_info_t *host) | |
1126 | { | |
1127 | int ctlr = host->ctlr, i; | |
1128 | unsigned long flags; | |
1129 | ||
1130 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
1131 | if (host->usage_count > 1) { | |
1132 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
1133 | printk(KERN_WARNING "cciss: Device busy for volume" | |
1134 | " revalidation (usage=%d)\n", host->usage_count); | |
1135 | return -EBUSY; | |
1136 | } | |
1137 | host->usage_count++; | |
1138 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
1139 | ||
1140 | for(i=0; i< NWD; i++) { | |
1141 | struct gendisk *disk = host->gendisk[i]; | |
6f5a0f7c | 1142 | if (disk) { |
1143 | request_queue_t *q = disk->queue; | |
1144 | ||
1145 | if (disk->flags & GENHD_FL_UP) | |
1146 | del_gendisk(disk); | |
1147 | if (q) | |
1148 | blk_cleanup_queue(q); | |
6f5a0f7c | 1149 | } |
1da177e4 LT |
1150 | } |
1151 | ||
1152 | /* | |
1153 | * Set the partition and block size structures for all volumes | |
1154 | * on this controller to zero. We will reread all of this data | |
1155 | */ | |
1156 | memset(host->drv, 0, sizeof(drive_info_struct) | |
1157 | * CISS_MAX_LUN); | |
1158 | /* | |
1159 | * Tell the array controller not to give us any interrupts while | |
1160 | * we check the new geometry. Then turn interrupts back on when | |
1161 | * we're done. | |
1162 | */ | |
1163 | host->access.set_intr_mask(host, CCISS_INTR_OFF); | |
1164 | cciss_getgeometry(ctlr); | |
1165 | host->access.set_intr_mask(host, CCISS_INTR_ON); | |
1166 | ||
1167 | /* Loop through each real device */ | |
1168 | for (i = 0; i < NWD; i++) { | |
1169 | struct gendisk *disk = host->gendisk[i]; | |
1170 | drive_info_struct *drv = &(host->drv[i]); | |
1171 | /* we must register the controller even if no disks exist */ | |
1172 | /* this is for the online array utilities */ | |
1173 | if (!drv->heads && i) | |
1174 | continue; | |
ad2b9312 | 1175 | blk_queue_hardsect_size(drv->queue, drv->block_size); |
1da177e4 LT |
1176 | set_capacity(disk, drv->nr_blocks); |
1177 | add_disk(disk); | |
1178 | } | |
1179 | host->usage_count--; | |
1180 | return 0; | |
1181 | } | |
1182 | ||
ddd47442 MM |
1183 | /* This function will check the usage_count of the drive to be updated/added. |
1184 | * If the usage_count is zero then the drive information will be updated and | |
1185 | * the disk will be re-registered with the kernel. If not then it will be | |
1186 | * left alone for the next reboot. The exception to this is disk 0 which | |
1187 | * will always be left registered with the kernel since it is also the | |
1188 | * controller node. Any changes to disk 0 will show up on the next | |
1189 | * reboot. | |
1190 | */ | |
1191 | static void cciss_update_drive_info(int ctlr, int drv_index) | |
1192 | { | |
1193 | ctlr_info_t *h = hba[ctlr]; | |
1194 | struct gendisk *disk; | |
1195 | ReadCapdata_struct *size_buff = NULL; | |
1196 | InquiryData_struct *inq_buff = NULL; | |
1197 | unsigned int block_size; | |
1198 | unsigned int total_size; | |
1199 | unsigned long flags = 0; | |
1200 | int ret = 0; | |
1201 | ||
1202 | /* if the disk already exists then deregister it before proceeding*/ | |
1203 | if (h->drv[drv_index].raid_level != -1){ | |
1204 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
1205 | h->drv[drv_index].busy_configuring = 1; | |
1206 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
1207 | ret = deregister_disk(h->gendisk[drv_index], | |
1208 | &h->drv[drv_index], 0); | |
1209 | h->drv[drv_index].busy_configuring = 0; | |
1210 | } | |
1211 | ||
1212 | /* If the disk is in use return */ | |
1213 | if (ret) | |
1214 | return; | |
1215 | ||
1216 | ||
1217 | /* Get information about the disk and modify the driver sturcture */ | |
1218 | size_buff = kmalloc(sizeof( ReadCapdata_struct), GFP_KERNEL); | |
1219 | if (size_buff == NULL) | |
1220 | goto mem_msg; | |
1221 | inq_buff = kmalloc(sizeof( InquiryData_struct), GFP_KERNEL); | |
1222 | if (inq_buff == NULL) | |
1223 | goto mem_msg; | |
1224 | ||
1225 | cciss_read_capacity(ctlr, drv_index, size_buff, 1, | |
1226 | &total_size, &block_size); | |
1227 | cciss_geometry_inquiry(ctlr, drv_index, 1, total_size, block_size, | |
1228 | inq_buff, &h->drv[drv_index]); | |
1229 | ||
1230 | ++h->num_luns; | |
1231 | disk = h->gendisk[drv_index]; | |
1232 | set_capacity(disk, h->drv[drv_index].nr_blocks); | |
1233 | ||
1234 | ||
1235 | /* if it's the controller it's already added */ | |
1236 | if (drv_index){ | |
1237 | disk->queue = blk_init_queue(do_cciss_request, &h->lock); | |
1238 | ||
1239 | /* Set up queue information */ | |
1240 | disk->queue->backing_dev_info.ra_pages = READ_AHEAD; | |
1241 | blk_queue_bounce_limit(disk->queue, hba[ctlr]->pdev->dma_mask); | |
1242 | ||
1243 | /* This is a hardware imposed limit. */ | |
1244 | blk_queue_max_hw_segments(disk->queue, MAXSGENTRIES); | |
1245 | ||
1246 | /* This is a limit in the driver and could be eliminated. */ | |
1247 | blk_queue_max_phys_segments(disk->queue, MAXSGENTRIES); | |
1248 | ||
1249 | blk_queue_max_sectors(disk->queue, 512); | |
1250 | ||
1251 | disk->queue->queuedata = hba[ctlr]; | |
1252 | ||
1253 | blk_queue_hardsect_size(disk->queue, | |
1254 | hba[ctlr]->drv[drv_index].block_size); | |
1255 | ||
1256 | h->drv[drv_index].queue = disk->queue; | |
1257 | add_disk(disk); | |
1258 | } | |
1259 | ||
1260 | freeret: | |
1261 | kfree(size_buff); | |
1262 | kfree(inq_buff); | |
1263 | return; | |
1264 | mem_msg: | |
1265 | printk(KERN_ERR "cciss: out of memory\n"); | |
1266 | goto freeret; | |
1267 | } | |
1268 | ||
1269 | /* This function will find the first index of the controllers drive array | |
1270 | * that has a -1 for the raid_level and will return that index. This is | |
1271 | * where new drives will be added. If the index to be returned is greater | |
1272 | * than the highest_lun index for the controller then highest_lun is set | |
1273 | * to this new index. If there are no available indexes then -1 is returned. | |
1274 | */ | |
1275 | static int cciss_find_free_drive_index(int ctlr) | |
1276 | { | |
1277 | int i; | |
1278 | ||
1279 | for (i=0; i < CISS_MAX_LUN; i++){ | |
1280 | if (hba[ctlr]->drv[i].raid_level == -1){ | |
1281 | if (i > hba[ctlr]->highest_lun) | |
1282 | hba[ctlr]->highest_lun = i; | |
1283 | return i; | |
1284 | } | |
1285 | } | |
1286 | return -1; | |
1287 | } | |
1288 | ||
1289 | /* This function will add and remove logical drives from the Logical | |
1290 | * drive array of the controller and maintain persistancy of ordering | |
1291 | * so that mount points are preserved until the next reboot. This allows | |
1292 | * for the removal of logical drives in the middle of the drive array | |
1293 | * without a re-ordering of those drives. | |
1294 | * INPUT | |
1295 | * h = The controller to perform the operations on | |
1296 | * del_disk = The disk to remove if specified. If the value given | |
1297 | * is NULL then no disk is removed. | |
1298 | */ | |
1299 | static int rebuild_lun_table(ctlr_info_t *h, struct gendisk *del_disk) | |
1da177e4 | 1300 | { |
ddd47442 MM |
1301 | int ctlr = h->ctlr; |
1302 | int num_luns; | |
1303 | ReportLunData_struct *ld_buff = NULL; | |
1304 | drive_info_struct *drv = NULL; | |
1305 | int return_code; | |
1306 | int listlength = 0; | |
1307 | int i; | |
1308 | int drv_found; | |
1309 | int drv_index = 0; | |
1310 | __u32 lunid = 0; | |
1da177e4 | 1311 | unsigned long flags; |
ddd47442 MM |
1312 | |
1313 | /* Set busy_configuring flag for this operation */ | |
1314 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
1315 | if (h->num_luns >= CISS_MAX_LUN){ | |
1316 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
1317 | return -EINVAL; | |
1318 | } | |
1319 | ||
1320 | if (h->busy_configuring){ | |
1321 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
1322 | return -EBUSY; | |
1323 | } | |
1324 | h->busy_configuring = 1; | |
1325 | ||
1326 | /* if del_disk is NULL then we are being called to add a new disk | |
1327 | * and update the logical drive table. If it is not NULL then | |
1328 | * we will check if the disk is in use or not. | |
1329 | */ | |
1330 | if (del_disk != NULL){ | |
1331 | drv = get_drv(del_disk); | |
1332 | drv->busy_configuring = 1; | |
1333 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
1334 | return_code = deregister_disk(del_disk, drv, 1); | |
1335 | drv->busy_configuring = 0; | |
1336 | h->busy_configuring = 0; | |
1337 | return return_code; | |
1338 | } else { | |
1339 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
1340 | if (!capable(CAP_SYS_RAWIO)) | |
1341 | return -EPERM; | |
1342 | ||
1343 | ld_buff = kzalloc(sizeof(ReportLunData_struct), GFP_KERNEL); | |
1344 | if (ld_buff == NULL) | |
1345 | goto mem_msg; | |
1346 | ||
1347 | return_code = sendcmd_withirq(CISS_REPORT_LOG, ctlr, ld_buff, | |
1348 | sizeof(ReportLunData_struct), 0, 0, 0, | |
1349 | TYPE_CMD); | |
1350 | ||
1351 | if (return_code == IO_OK){ | |
1352 | listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[0])) << 24; | |
1353 | listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[1])) << 16; | |
1354 | listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[2])) << 8; | |
1355 | listlength |= 0xff & (unsigned int)(ld_buff->LUNListLength[3]); | |
1356 | } else{ /* reading number of logical volumes failed */ | |
1357 | printk(KERN_WARNING "cciss: report logical volume" | |
1358 | " command failed\n"); | |
1359 | listlength = 0; | |
1360 | goto freeret; | |
1361 | } | |
1362 | ||
1363 | num_luns = listlength / 8; /* 8 bytes per entry */ | |
1364 | if (num_luns > CISS_MAX_LUN){ | |
1365 | num_luns = CISS_MAX_LUN; | |
1366 | printk(KERN_WARNING "cciss: more luns configured" | |
1367 | " on controller than can be handled by" | |
1368 | " this driver.\n"); | |
1369 | } | |
1370 | ||
1371 | /* Compare controller drive array to drivers drive array. | |
1372 | * Check for updates in the drive information and any new drives | |
1373 | * on the controller. | |
1374 | */ | |
1375 | for (i=0; i < num_luns; i++){ | |
1376 | int j; | |
1377 | ||
1378 | drv_found = 0; | |
1379 | ||
1380 | lunid = (0xff & | |
1381 | (unsigned int)(ld_buff->LUN[i][3])) << 24; | |
1382 | lunid |= (0xff & | |
1383 | (unsigned int)(ld_buff->LUN[i][2])) << 16; | |
1384 | lunid |= (0xff & | |
1385 | (unsigned int)(ld_buff->LUN[i][1])) << 8; | |
1386 | lunid |= 0xff & | |
1387 | (unsigned int)(ld_buff->LUN[i][0]); | |
1388 | ||
1389 | /* Find if the LUN is already in the drive array | |
1390 | * of the controller. If so then update its info | |
1391 | * if not is use. If it does not exist then find | |
1392 | * the first free index and add it. | |
1393 | */ | |
1394 | for (j=0; j <= h->highest_lun; j++){ | |
1395 | if (h->drv[j].LunID == lunid){ | |
1396 | drv_index = j; | |
1397 | drv_found = 1; | |
1398 | } | |
1399 | } | |
1400 | ||
1401 | /* check if the drive was found already in the array */ | |
1402 | if (!drv_found){ | |
1403 | drv_index = cciss_find_free_drive_index(ctlr); | |
1404 | if (drv_index == -1) | |
1405 | goto freeret; | |
1406 | ||
1407 | } | |
1408 | h->drv[drv_index].LunID = lunid; | |
1409 | cciss_update_drive_info(ctlr, drv_index); | |
1410 | } /* end for */ | |
1411 | } /* end else */ | |
1412 | ||
1413 | freeret: | |
1414 | kfree(ld_buff); | |
1415 | h->busy_configuring = 0; | |
1416 | /* We return -1 here to tell the ACU that we have registered/updated | |
1417 | * all of the drives that we can and to keep it from calling us | |
1418 | * additional times. | |
1419 | */ | |
1420 | return -1; | |
1421 | mem_msg: | |
1422 | printk(KERN_ERR "cciss: out of memory\n"); | |
1423 | goto freeret; | |
1424 | } | |
1425 | ||
1426 | /* This function will deregister the disk and it's queue from the | |
1427 | * kernel. It must be called with the controller lock held and the | |
1428 | * drv structures busy_configuring flag set. It's parameters are: | |
1429 | * | |
1430 | * disk = This is the disk to be deregistered | |
1431 | * drv = This is the drive_info_struct associated with the disk to be | |
1432 | * deregistered. It contains information about the disk used | |
1433 | * by the driver. | |
1434 | * clear_all = This flag determines whether or not the disk information | |
1435 | * is going to be completely cleared out and the highest_lun | |
1436 | * reset. Sometimes we want to clear out information about | |
1437 | * the disk in preperation for re-adding it. In this case | |
1438 | * the highest_lun should be left unchanged and the LunID | |
1439 | * should not be cleared. | |
1440 | */ | |
1441 | static int deregister_disk(struct gendisk *disk, drive_info_struct *drv, | |
1442 | int clear_all) | |
1443 | { | |
1da177e4 | 1444 | ctlr_info_t *h = get_host(disk); |
1da177e4 LT |
1445 | |
1446 | if (!capable(CAP_SYS_RAWIO)) | |
1447 | return -EPERM; | |
1448 | ||
1da177e4 | 1449 | /* make sure logical volume is NOT is use */ |
ddd47442 MM |
1450 | if(clear_all || (h->gendisk[0] == disk)) { |
1451 | if (drv->usage_count > 1) | |
1da177e4 LT |
1452 | return -EBUSY; |
1453 | } | |
ddd47442 MM |
1454 | else |
1455 | if( drv->usage_count > 0 ) | |
1456 | return -EBUSY; | |
1da177e4 | 1457 | |
ddd47442 MM |
1458 | /* invalidate the devices and deregister the disk. If it is disk |
1459 | * zero do not deregister it but just zero out it's values. This | |
1460 | * allows us to delete disk zero but keep the controller registered. | |
1461 | */ | |
1462 | if (h->gendisk[0] != disk){ | |
6f5a0f7c | 1463 | if (disk) { |
1464 | request_queue_t *q = disk->queue; | |
1465 | if (disk->flags & GENHD_FL_UP) | |
1466 | del_gendisk(disk); | |
2f6331fa | 1467 | if (q) { |
6f5a0f7c | 1468 | blk_cleanup_queue(q); |
2f6331fa MM |
1469 | drv->queue = NULL; |
1470 | } | |
ddd47442 MM |
1471 | } |
1472 | } | |
1473 | ||
1474 | --h->num_luns; | |
1475 | /* zero out the disk size info */ | |
1476 | drv->nr_blocks = 0; | |
1477 | drv->block_size = 0; | |
1478 | drv->heads = 0; | |
1479 | drv->sectors = 0; | |
1480 | drv->cylinders = 0; | |
1481 | drv->raid_level = -1; /* This can be used as a flag variable to | |
1482 | * indicate that this element of the drive | |
1483 | * array is free. | |
1484 | */ | |
1485 | ||
1486 | if (clear_all){ | |
1da177e4 LT |
1487 | /* check to see if it was the last disk */ |
1488 | if (drv == h->drv + h->highest_lun) { | |
1489 | /* if so, find the new hightest lun */ | |
1490 | int i, newhighest =-1; | |
1491 | for(i=0; i<h->highest_lun; i++) { | |
1492 | /* if the disk has size > 0, it is available */ | |
ddd47442 | 1493 | if (h->drv[i].heads) |
1da177e4 LT |
1494 | newhighest = i; |
1495 | } | |
1496 | h->highest_lun = newhighest; | |
1da177e4 | 1497 | } |
ddd47442 | 1498 | |
1da177e4 | 1499 | drv->LunID = 0; |
ddd47442 | 1500 | } |
1da177e4 LT |
1501 | return(0); |
1502 | } | |
ddd47442 | 1503 | |
1da177e4 LT |
1504 | static int fill_cmd(CommandList_struct *c, __u8 cmd, int ctlr, void *buff, |
1505 | size_t size, | |
1506 | unsigned int use_unit_num, /* 0: address the controller, | |
1507 | 1: address logical volume log_unit, | |
1508 | 2: periph device address is scsi3addr */ | |
1509 | unsigned int log_unit, __u8 page_code, unsigned char *scsi3addr, | |
1510 | int cmd_type) | |
1511 | { | |
1512 | ctlr_info_t *h= hba[ctlr]; | |
1513 | u64bit buff_dma_handle; | |
1514 | int status = IO_OK; | |
1515 | ||
1516 | c->cmd_type = CMD_IOCTL_PEND; | |
1517 | c->Header.ReplyQueue = 0; | |
1518 | if( buff != NULL) { | |
1519 | c->Header.SGList = 1; | |
1520 | c->Header.SGTotal= 1; | |
1521 | } else { | |
1522 | c->Header.SGList = 0; | |
1523 | c->Header.SGTotal= 0; | |
1524 | } | |
1525 | c->Header.Tag.lower = c->busaddr; | |
1526 | ||
1527 | c->Request.Type.Type = cmd_type; | |
1528 | if (cmd_type == TYPE_CMD) { | |
1529 | switch(cmd) { | |
1530 | case CISS_INQUIRY: | |
1531 | /* If the logical unit number is 0 then, this is going | |
1532 | to controller so It's a physical command | |
1533 | mode = 0 target = 0. So we have nothing to write. | |
1534 | otherwise, if use_unit_num == 1, | |
1535 | mode = 1(volume set addressing) target = LUNID | |
1536 | otherwise, if use_unit_num == 2, | |
1537 | mode = 0(periph dev addr) target = scsi3addr */ | |
1538 | if (use_unit_num == 1) { | |
1539 | c->Header.LUN.LogDev.VolId= | |
1540 | h->drv[log_unit].LunID; | |
1541 | c->Header.LUN.LogDev.Mode = 1; | |
1542 | } else if (use_unit_num == 2) { | |
1543 | memcpy(c->Header.LUN.LunAddrBytes,scsi3addr,8); | |
1544 | c->Header.LUN.LogDev.Mode = 0; | |
1545 | } | |
1546 | /* are we trying to read a vital product page */ | |
1547 | if(page_code != 0) { | |
1548 | c->Request.CDB[1] = 0x01; | |
1549 | c->Request.CDB[2] = page_code; | |
1550 | } | |
1551 | c->Request.CDBLen = 6; | |
1552 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
1553 | c->Request.Type.Direction = XFER_READ; | |
1554 | c->Request.Timeout = 0; | |
1555 | c->Request.CDB[0] = CISS_INQUIRY; | |
1556 | c->Request.CDB[4] = size & 0xFF; | |
1557 | break; | |
1558 | case CISS_REPORT_LOG: | |
1559 | case CISS_REPORT_PHYS: | |
1560 | /* Talking to controller so It's a physical command | |
1561 | mode = 00 target = 0. Nothing to write. | |
1562 | */ | |
1563 | c->Request.CDBLen = 12; | |
1564 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
1565 | c->Request.Type.Direction = XFER_READ; | |
1566 | c->Request.Timeout = 0; | |
1567 | c->Request.CDB[0] = cmd; | |
1568 | c->Request.CDB[6] = (size >> 24) & 0xFF; //MSB | |
1569 | c->Request.CDB[7] = (size >> 16) & 0xFF; | |
1570 | c->Request.CDB[8] = (size >> 8) & 0xFF; | |
1571 | c->Request.CDB[9] = size & 0xFF; | |
1572 | break; | |
1573 | ||
1574 | case CCISS_READ_CAPACITY: | |
1575 | c->Header.LUN.LogDev.VolId = h->drv[log_unit].LunID; | |
1576 | c->Header.LUN.LogDev.Mode = 1; | |
1577 | c->Request.CDBLen = 10; | |
1578 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
1579 | c->Request.Type.Direction = XFER_READ; | |
1580 | c->Request.Timeout = 0; | |
1581 | c->Request.CDB[0] = cmd; | |
1582 | break; | |
1583 | case CCISS_CACHE_FLUSH: | |
1584 | c->Request.CDBLen = 12; | |
1585 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
1586 | c->Request.Type.Direction = XFER_WRITE; | |
1587 | c->Request.Timeout = 0; | |
1588 | c->Request.CDB[0] = BMIC_WRITE; | |
1589 | c->Request.CDB[6] = BMIC_CACHE_FLUSH; | |
1590 | break; | |
1591 | default: | |
1592 | printk(KERN_WARNING | |
1593 | "cciss%d: Unknown Command 0x%c\n", ctlr, cmd); | |
1594 | return(IO_ERROR); | |
1595 | } | |
1596 | } else if (cmd_type == TYPE_MSG) { | |
1597 | switch (cmd) { | |
3da8b713 | 1598 | case 0: /* ABORT message */ |
1599 | c->Request.CDBLen = 12; | |
1600 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
1601 | c->Request.Type.Direction = XFER_WRITE; | |
1602 | c->Request.Timeout = 0; | |
1603 | c->Request.CDB[0] = cmd; /* abort */ | |
1604 | c->Request.CDB[1] = 0; /* abort a command */ | |
1605 | /* buff contains the tag of the command to abort */ | |
1606 | memcpy(&c->Request.CDB[4], buff, 8); | |
1607 | break; | |
1608 | case 1: /* RESET message */ | |
1609 | c->Request.CDBLen = 12; | |
1610 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
1611 | c->Request.Type.Direction = XFER_WRITE; | |
1612 | c->Request.Timeout = 0; | |
1613 | memset(&c->Request.CDB[0], 0, sizeof(c->Request.CDB)); | |
1614 | c->Request.CDB[0] = cmd; /* reset */ | |
1615 | c->Request.CDB[1] = 0x04; /* reset a LUN */ | |
1da177e4 LT |
1616 | case 3: /* No-Op message */ |
1617 | c->Request.CDBLen = 1; | |
1618 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
1619 | c->Request.Type.Direction = XFER_WRITE; | |
1620 | c->Request.Timeout = 0; | |
1621 | c->Request.CDB[0] = cmd; | |
1622 | break; | |
1623 | default: | |
1624 | printk(KERN_WARNING | |
1625 | "cciss%d: unknown message type %d\n", | |
1626 | ctlr, cmd); | |
1627 | return IO_ERROR; | |
1628 | } | |
1629 | } else { | |
1630 | printk(KERN_WARNING | |
1631 | "cciss%d: unknown command type %d\n", ctlr, cmd_type); | |
1632 | return IO_ERROR; | |
1633 | } | |
1634 | /* Fill in the scatter gather information */ | |
1635 | if (size > 0) { | |
1636 | buff_dma_handle.val = (__u64) pci_map_single(h->pdev, | |
1637 | buff, size, PCI_DMA_BIDIRECTIONAL); | |
1638 | c->SG[0].Addr.lower = buff_dma_handle.val32.lower; | |
1639 | c->SG[0].Addr.upper = buff_dma_handle.val32.upper; | |
1640 | c->SG[0].Len = size; | |
1641 | c->SG[0].Ext = 0; /* we are not chaining */ | |
1642 | } | |
1643 | return status; | |
1644 | } | |
1645 | static int sendcmd_withirq(__u8 cmd, | |
1646 | int ctlr, | |
1647 | void *buff, | |
1648 | size_t size, | |
1649 | unsigned int use_unit_num, | |
1650 | unsigned int log_unit, | |
1651 | __u8 page_code, | |
1652 | int cmd_type) | |
1653 | { | |
1654 | ctlr_info_t *h = hba[ctlr]; | |
1655 | CommandList_struct *c; | |
1656 | u64bit buff_dma_handle; | |
1657 | unsigned long flags; | |
1658 | int return_status; | |
1659 | DECLARE_COMPLETION(wait); | |
1660 | ||
1661 | if ((c = cmd_alloc(h , 0)) == NULL) | |
1662 | return -ENOMEM; | |
1663 | return_status = fill_cmd(c, cmd, ctlr, buff, size, use_unit_num, | |
1664 | log_unit, page_code, NULL, cmd_type); | |
1665 | if (return_status != IO_OK) { | |
1666 | cmd_free(h, c, 0); | |
1667 | return return_status; | |
1668 | } | |
1669 | resend_cmd2: | |
1670 | c->waiting = &wait; | |
1671 | ||
1672 | /* Put the request on the tail of the queue and send it */ | |
1673 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
1674 | addQ(&h->reqQ, c); | |
1675 | h->Qdepth++; | |
1676 | start_io(h); | |
1677 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
1678 | ||
1679 | wait_for_completion(&wait); | |
1680 | ||
1681 | if(c->err_info->CommandStatus != 0) | |
1682 | { /* an error has occurred */ | |
1683 | switch(c->err_info->CommandStatus) | |
1684 | { | |
1685 | case CMD_TARGET_STATUS: | |
1686 | printk(KERN_WARNING "cciss: cmd %p has " | |
1687 | " completed with errors\n", c); | |
1688 | if( c->err_info->ScsiStatus) | |
1689 | { | |
1690 | printk(KERN_WARNING "cciss: cmd %p " | |
1691 | "has SCSI Status = %x\n", | |
1692 | c, | |
1693 | c->err_info->ScsiStatus); | |
1694 | } | |
1695 | ||
1696 | break; | |
1697 | case CMD_DATA_UNDERRUN: | |
1698 | case CMD_DATA_OVERRUN: | |
1699 | /* expected for inquire and report lun commands */ | |
1700 | break; | |
1701 | case CMD_INVALID: | |
1702 | printk(KERN_WARNING "cciss: Cmd %p is " | |
1703 | "reported invalid\n", c); | |
1704 | return_status = IO_ERROR; | |
1705 | break; | |
1706 | case CMD_PROTOCOL_ERR: | |
1707 | printk(KERN_WARNING "cciss: cmd %p has " | |
1708 | "protocol error \n", c); | |
1709 | return_status = IO_ERROR; | |
1710 | break; | |
1711 | case CMD_HARDWARE_ERR: | |
1712 | printk(KERN_WARNING "cciss: cmd %p had " | |
1713 | " hardware error\n", c); | |
1714 | return_status = IO_ERROR; | |
1715 | break; | |
1716 | case CMD_CONNECTION_LOST: | |
1717 | printk(KERN_WARNING "cciss: cmd %p had " | |
1718 | "connection lost\n", c); | |
1719 | return_status = IO_ERROR; | |
1720 | break; | |
1721 | case CMD_ABORTED: | |
1722 | printk(KERN_WARNING "cciss: cmd %p was " | |
1723 | "aborted\n", c); | |
1724 | return_status = IO_ERROR; | |
1725 | break; | |
1726 | case CMD_ABORT_FAILED: | |
1727 | printk(KERN_WARNING "cciss: cmd %p reports " | |
1728 | "abort failed\n", c); | |
1729 | return_status = IO_ERROR; | |
1730 | break; | |
1731 | case CMD_UNSOLICITED_ABORT: | |
1732 | printk(KERN_WARNING | |
1733 | "cciss%d: unsolicited abort %p\n", | |
1734 | ctlr, c); | |
1735 | if (c->retry_count < MAX_CMD_RETRIES) { | |
1736 | printk(KERN_WARNING | |
1737 | "cciss%d: retrying %p\n", | |
1738 | ctlr, c); | |
1739 | c->retry_count++; | |
1740 | /* erase the old error information */ | |
1741 | memset(c->err_info, 0, | |
1742 | sizeof(ErrorInfo_struct)); | |
1743 | return_status = IO_OK; | |
1744 | INIT_COMPLETION(wait); | |
1745 | goto resend_cmd2; | |
1746 | } | |
1747 | return_status = IO_ERROR; | |
1748 | break; | |
1749 | default: | |
1750 | printk(KERN_WARNING "cciss: cmd %p returned " | |
1751 | "unknown status %x\n", c, | |
1752 | c->err_info->CommandStatus); | |
1753 | return_status = IO_ERROR; | |
1754 | } | |
1755 | } | |
1756 | /* unlock the buffers from DMA */ | |
bb2a37bf MM |
1757 | buff_dma_handle.val32.lower = c->SG[0].Addr.lower; |
1758 | buff_dma_handle.val32.upper = c->SG[0].Addr.upper; | |
1da177e4 | 1759 | pci_unmap_single( h->pdev, (dma_addr_t) buff_dma_handle.val, |
bb2a37bf | 1760 | c->SG[0].Len, PCI_DMA_BIDIRECTIONAL); |
1da177e4 LT |
1761 | cmd_free(h, c, 0); |
1762 | return(return_status); | |
1763 | ||
1764 | } | |
1765 | static void cciss_geometry_inquiry(int ctlr, int logvol, | |
1766 | int withirq, unsigned int total_size, | |
1767 | unsigned int block_size, InquiryData_struct *inq_buff, | |
1768 | drive_info_struct *drv) | |
1769 | { | |
1770 | int return_code; | |
1771 | memset(inq_buff, 0, sizeof(InquiryData_struct)); | |
1772 | if (withirq) | |
1773 | return_code = sendcmd_withirq(CISS_INQUIRY, ctlr, | |
1774 | inq_buff, sizeof(*inq_buff), 1, logvol ,0xC1, TYPE_CMD); | |
1775 | else | |
1776 | return_code = sendcmd(CISS_INQUIRY, ctlr, inq_buff, | |
1777 | sizeof(*inq_buff), 1, logvol ,0xC1, NULL, TYPE_CMD); | |
1778 | if (return_code == IO_OK) { | |
1779 | if(inq_buff->data_byte[8] == 0xFF) { | |
1780 | printk(KERN_WARNING | |
1781 | "cciss: reading geometry failed, volume " | |
1782 | "does not support reading geometry\n"); | |
1783 | drv->block_size = block_size; | |
1784 | drv->nr_blocks = total_size; | |
1785 | drv->heads = 255; | |
1786 | drv->sectors = 32; // Sectors per track | |
1787 | drv->cylinders = total_size / 255 / 32; | |
1788 | } else { | |
1789 | unsigned int t; | |
1790 | ||
1791 | drv->block_size = block_size; | |
1792 | drv->nr_blocks = total_size; | |
1793 | drv->heads = inq_buff->data_byte[6]; | |
1794 | drv->sectors = inq_buff->data_byte[7]; | |
1795 | drv->cylinders = (inq_buff->data_byte[4] & 0xff) << 8; | |
1796 | drv->cylinders += inq_buff->data_byte[5]; | |
1797 | drv->raid_level = inq_buff->data_byte[8]; | |
1798 | t = drv->heads * drv->sectors; | |
1799 | if (t > 1) { | |
1800 | drv->cylinders = total_size/t; | |
1801 | } | |
1802 | } | |
1803 | } else { /* Get geometry failed */ | |
1804 | printk(KERN_WARNING "cciss: reading geometry failed\n"); | |
1805 | } | |
1806 | printk(KERN_INFO " heads= %d, sectors= %d, cylinders= %d\n\n", | |
1807 | drv->heads, drv->sectors, drv->cylinders); | |
1808 | } | |
1809 | static void | |
1810 | cciss_read_capacity(int ctlr, int logvol, ReadCapdata_struct *buf, | |
1811 | int withirq, unsigned int *total_size, unsigned int *block_size) | |
1812 | { | |
1813 | int return_code; | |
1814 | memset(buf, 0, sizeof(*buf)); | |
1815 | if (withirq) | |
1816 | return_code = sendcmd_withirq(CCISS_READ_CAPACITY, | |
1817 | ctlr, buf, sizeof(*buf), 1, logvol, 0, TYPE_CMD); | |
1818 | else | |
1819 | return_code = sendcmd(CCISS_READ_CAPACITY, | |
1820 | ctlr, buf, sizeof(*buf), 1, logvol, 0, NULL, TYPE_CMD); | |
1821 | if (return_code == IO_OK) { | |
1822 | *total_size = be32_to_cpu(*((__be32 *) &buf->total_size[0]))+1; | |
1823 | *block_size = be32_to_cpu(*((__be32 *) &buf->block_size[0])); | |
1824 | } else { /* read capacity command failed */ | |
1825 | printk(KERN_WARNING "cciss: read capacity failed\n"); | |
1826 | *total_size = 0; | |
1827 | *block_size = BLOCK_SIZE; | |
1828 | } | |
1829 | printk(KERN_INFO " blocks= %u block_size= %d\n", | |
1830 | *total_size, *block_size); | |
1831 | return; | |
1832 | } | |
1833 | ||
1da177e4 LT |
1834 | static int cciss_revalidate(struct gendisk *disk) |
1835 | { | |
1836 | ctlr_info_t *h = get_host(disk); | |
1837 | drive_info_struct *drv = get_drv(disk); | |
1838 | int logvol; | |
1839 | int FOUND=0; | |
1840 | unsigned int block_size; | |
1841 | unsigned int total_size; | |
1842 | ReadCapdata_struct *size_buff = NULL; | |
1843 | InquiryData_struct *inq_buff = NULL; | |
1844 | ||
1845 | for(logvol=0; logvol < CISS_MAX_LUN; logvol++) | |
1846 | { | |
1847 | if(h->drv[logvol].LunID == drv->LunID) { | |
1848 | FOUND=1; | |
1849 | break; | |
1850 | } | |
1851 | } | |
1852 | ||
1853 | if (!FOUND) return 1; | |
1854 | ||
1855 | size_buff = kmalloc(sizeof( ReadCapdata_struct), GFP_KERNEL); | |
1856 | if (size_buff == NULL) | |
1857 | { | |
1858 | printk(KERN_WARNING "cciss: out of memory\n"); | |
1859 | return 1; | |
1860 | } | |
1861 | inq_buff = kmalloc(sizeof( InquiryData_struct), GFP_KERNEL); | |
1862 | if (inq_buff == NULL) | |
1863 | { | |
1864 | printk(KERN_WARNING "cciss: out of memory\n"); | |
1865 | kfree(size_buff); | |
1866 | return 1; | |
1867 | } | |
1868 | ||
1869 | cciss_read_capacity(h->ctlr, logvol, size_buff, 1, &total_size, &block_size); | |
1870 | cciss_geometry_inquiry(h->ctlr, logvol, 1, total_size, block_size, inq_buff, drv); | |
1871 | ||
ad2b9312 | 1872 | blk_queue_hardsect_size(drv->queue, drv->block_size); |
1da177e4 LT |
1873 | set_capacity(disk, drv->nr_blocks); |
1874 | ||
1875 | kfree(size_buff); | |
1876 | kfree(inq_buff); | |
1877 | return 0; | |
1878 | } | |
1879 | ||
1880 | /* | |
1881 | * Wait polling for a command to complete. | |
1882 | * The memory mapped FIFO is polled for the completion. | |
1883 | * Used only at init time, interrupts from the HBA are disabled. | |
1884 | */ | |
1885 | static unsigned long pollcomplete(int ctlr) | |
1886 | { | |
1887 | unsigned long done; | |
1888 | int i; | |
1889 | ||
1890 | /* Wait (up to 20 seconds) for a command to complete */ | |
1891 | ||
1892 | for (i = 20 * HZ; i > 0; i--) { | |
1893 | done = hba[ctlr]->access.command_completed(hba[ctlr]); | |
86e84862 NA |
1894 | if (done == FIFO_EMPTY) |
1895 | schedule_timeout_uninterruptible(1); | |
1896 | else | |
1da177e4 LT |
1897 | return (done); |
1898 | } | |
1899 | /* Invalid address to tell caller we ran out of time */ | |
1900 | return 1; | |
1901 | } | |
3da8b713 | 1902 | |
1903 | static int add_sendcmd_reject(__u8 cmd, int ctlr, unsigned long complete) | |
1904 | { | |
1905 | /* We get in here if sendcmd() is polling for completions | |
1906 | and gets some command back that it wasn't expecting -- | |
1907 | something other than that which it just sent down. | |
1908 | Ordinarily, that shouldn't happen, but it can happen when | |
1909 | the scsi tape stuff gets into error handling mode, and | |
1910 | starts using sendcmd() to try to abort commands and | |
1911 | reset tape drives. In that case, sendcmd may pick up | |
1912 | completions of commands that were sent to logical drives | |
1913 | through the block i/o system, or cciss ioctls completing, etc. | |
1914 | In that case, we need to save those completions for later | |
1915 | processing by the interrupt handler. | |
1916 | */ | |
1917 | ||
1918 | #ifdef CONFIG_CISS_SCSI_TAPE | |
1919 | struct sendcmd_reject_list *srl = &hba[ctlr]->scsi_rejects; | |
1920 | ||
1921 | /* If it's not the scsi tape stuff doing error handling, (abort */ | |
1922 | /* or reset) then we don't expect anything weird. */ | |
1923 | if (cmd != CCISS_RESET_MSG && cmd != CCISS_ABORT_MSG) { | |
1924 | #endif | |
1925 | printk( KERN_WARNING "cciss cciss%d: SendCmd " | |
1926 | "Invalid command list address returned! (%lx)\n", | |
1927 | ctlr, complete); | |
1928 | /* not much we can do. */ | |
1929 | #ifdef CONFIG_CISS_SCSI_TAPE | |
1930 | return 1; | |
1931 | } | |
1932 | ||
1933 | /* We've sent down an abort or reset, but something else | |
1934 | has completed */ | |
1935 | if (srl->ncompletions >= (NR_CMDS + 2)) { | |
1936 | /* Uh oh. No room to save it for later... */ | |
1937 | printk(KERN_WARNING "cciss%d: Sendcmd: Invalid command addr, " | |
1938 | "reject list overflow, command lost!\n", ctlr); | |
1939 | return 1; | |
1940 | } | |
1941 | /* Save it for later */ | |
1942 | srl->complete[srl->ncompletions] = complete; | |
1943 | srl->ncompletions++; | |
1944 | #endif | |
1945 | return 0; | |
1946 | } | |
1947 | ||
1da177e4 LT |
1948 | /* |
1949 | * Send a command to the controller, and wait for it to complete. | |
1950 | * Only used at init time. | |
1951 | */ | |
1952 | static int sendcmd( | |
1953 | __u8 cmd, | |
1954 | int ctlr, | |
1955 | void *buff, | |
1956 | size_t size, | |
1957 | unsigned int use_unit_num, /* 0: address the controller, | |
1958 | 1: address logical volume log_unit, | |
1959 | 2: periph device address is scsi3addr */ | |
1960 | unsigned int log_unit, | |
1961 | __u8 page_code, | |
1962 | unsigned char *scsi3addr, | |
1963 | int cmd_type) | |
1964 | { | |
1965 | CommandList_struct *c; | |
1966 | int i; | |
1967 | unsigned long complete; | |
1968 | ctlr_info_t *info_p= hba[ctlr]; | |
1969 | u64bit buff_dma_handle; | |
3da8b713 | 1970 | int status, done = 0; |
1da177e4 LT |
1971 | |
1972 | if ((c = cmd_alloc(info_p, 1)) == NULL) { | |
1973 | printk(KERN_WARNING "cciss: unable to get memory"); | |
1974 | return(IO_ERROR); | |
1975 | } | |
1976 | status = fill_cmd(c, cmd, ctlr, buff, size, use_unit_num, | |
1977 | log_unit, page_code, scsi3addr, cmd_type); | |
1978 | if (status != IO_OK) { | |
1979 | cmd_free(info_p, c, 1); | |
1980 | return status; | |
1981 | } | |
1982 | resend_cmd1: | |
1983 | /* | |
1984 | * Disable interrupt | |
1985 | */ | |
1986 | #ifdef CCISS_DEBUG | |
1987 | printk(KERN_DEBUG "cciss: turning intr off\n"); | |
1988 | #endif /* CCISS_DEBUG */ | |
1989 | info_p->access.set_intr_mask(info_p, CCISS_INTR_OFF); | |
1990 | ||
1991 | /* Make sure there is room in the command FIFO */ | |
3da8b713 | 1992 | /* Actually it should be completely empty at this time */ |
1993 | /* unless we are in here doing error handling for the scsi */ | |
1994 | /* tape side of the driver. */ | |
1da177e4 LT |
1995 | for (i = 200000; i > 0; i--) |
1996 | { | |
1997 | /* if fifo isn't full go */ | |
1998 | if (!(info_p->access.fifo_full(info_p))) | |
1999 | { | |
2000 | ||
2001 | break; | |
2002 | } | |
2003 | udelay(10); | |
2004 | printk(KERN_WARNING "cciss cciss%d: SendCmd FIFO full," | |
2005 | " waiting!\n", ctlr); | |
2006 | } | |
2007 | /* | |
2008 | * Send the cmd | |
2009 | */ | |
2010 | info_p->access.submit_command(info_p, c); | |
3da8b713 | 2011 | done = 0; |
2012 | do { | |
2013 | complete = pollcomplete(ctlr); | |
1da177e4 LT |
2014 | |
2015 | #ifdef CCISS_DEBUG | |
3da8b713 | 2016 | printk(KERN_DEBUG "cciss: command completed\n"); |
1da177e4 LT |
2017 | #endif /* CCISS_DEBUG */ |
2018 | ||
3da8b713 | 2019 | if (complete == 1) { |
2020 | printk( KERN_WARNING | |
2021 | "cciss cciss%d: SendCmd Timeout out, " | |
2022 | "No command list address returned!\n", | |
2023 | ctlr); | |
2024 | status = IO_ERROR; | |
2025 | done = 1; | |
2026 | break; | |
2027 | } | |
2028 | ||
2029 | /* This will need to change for direct lookup completions */ | |
1da177e4 LT |
2030 | if ( (complete & CISS_ERROR_BIT) |
2031 | && (complete & ~CISS_ERROR_BIT) == c->busaddr) | |
2032 | { | |
2033 | /* if data overrun or underun on Report command | |
2034 | ignore it | |
2035 | */ | |
2036 | if (((c->Request.CDB[0] == CISS_REPORT_LOG) || | |
2037 | (c->Request.CDB[0] == CISS_REPORT_PHYS) || | |
2038 | (c->Request.CDB[0] == CISS_INQUIRY)) && | |
2039 | ((c->err_info->CommandStatus == | |
2040 | CMD_DATA_OVERRUN) || | |
2041 | (c->err_info->CommandStatus == | |
2042 | CMD_DATA_UNDERRUN) | |
2043 | )) | |
2044 | { | |
2045 | complete = c->busaddr; | |
2046 | } else { | |
2047 | if (c->err_info->CommandStatus == | |
2048 | CMD_UNSOLICITED_ABORT) { | |
2049 | printk(KERN_WARNING "cciss%d: " | |
2050 | "unsolicited abort %p\n", | |
2051 | ctlr, c); | |
2052 | if (c->retry_count < MAX_CMD_RETRIES) { | |
2053 | printk(KERN_WARNING | |
2054 | "cciss%d: retrying %p\n", | |
2055 | ctlr, c); | |
2056 | c->retry_count++; | |
2057 | /* erase the old error */ | |
2058 | /* information */ | |
2059 | memset(c->err_info, 0, | |
2060 | sizeof(ErrorInfo_struct)); | |
2061 | goto resend_cmd1; | |
2062 | } else { | |
2063 | printk(KERN_WARNING | |
2064 | "cciss%d: retried %p too " | |
2065 | "many times\n", ctlr, c); | |
2066 | status = IO_ERROR; | |
2067 | goto cleanup1; | |
2068 | } | |
3da8b713 | 2069 | } else if (c->err_info->CommandStatus == CMD_UNABORTABLE) { |
2070 | printk(KERN_WARNING "cciss%d: command could not be aborted.\n", ctlr); | |
2071 | status = IO_ERROR; | |
2072 | goto cleanup1; | |
1da177e4 LT |
2073 | } |
2074 | printk(KERN_WARNING "ciss ciss%d: sendcmd" | |
2075 | " Error %x \n", ctlr, | |
2076 | c->err_info->CommandStatus); | |
2077 | printk(KERN_WARNING "ciss ciss%d: sendcmd" | |
2078 | " offensive info\n" | |
2079 | " size %x\n num %x value %x\n", ctlr, | |
2080 | c->err_info->MoreErrInfo.Invalid_Cmd.offense_size, | |
2081 | c->err_info->MoreErrInfo.Invalid_Cmd.offense_num, | |
2082 | c->err_info->MoreErrInfo.Invalid_Cmd.offense_value); | |
2083 | status = IO_ERROR; | |
2084 | goto cleanup1; | |
2085 | } | |
2086 | } | |
3da8b713 | 2087 | /* This will need changing for direct lookup completions */ |
1da177e4 | 2088 | if (complete != c->busaddr) { |
3da8b713 | 2089 | if (add_sendcmd_reject(cmd, ctlr, complete) != 0) { |
2090 | BUG(); /* we are pretty much hosed if we get here. */ | |
2091 | } | |
2092 | continue; | |
2093 | } else | |
2094 | done = 1; | |
2095 | } while (!done); | |
1da177e4 LT |
2096 | |
2097 | cleanup1: | |
2098 | /* unlock the data buffer from DMA */ | |
bb2a37bf MM |
2099 | buff_dma_handle.val32.lower = c->SG[0].Addr.lower; |
2100 | buff_dma_handle.val32.upper = c->SG[0].Addr.upper; | |
1da177e4 | 2101 | pci_unmap_single(info_p->pdev, (dma_addr_t) buff_dma_handle.val, |
bb2a37bf | 2102 | c->SG[0].Len, PCI_DMA_BIDIRECTIONAL); |
3da8b713 | 2103 | #ifdef CONFIG_CISS_SCSI_TAPE |
2104 | /* if we saved some commands for later, process them now. */ | |
2105 | if (info_p->scsi_rejects.ncompletions > 0) | |
2106 | do_cciss_intr(0, info_p, NULL); | |
2107 | #endif | |
1da177e4 LT |
2108 | cmd_free(info_p, c, 1); |
2109 | return (status); | |
2110 | } | |
2111 | /* | |
2112 | * Map (physical) PCI mem into (virtual) kernel space | |
2113 | */ | |
2114 | static void __iomem *remap_pci_mem(ulong base, ulong size) | |
2115 | { | |
2116 | ulong page_base = ((ulong) base) & PAGE_MASK; | |
2117 | ulong page_offs = ((ulong) base) - page_base; | |
2118 | void __iomem *page_remapped = ioremap(page_base, page_offs+size); | |
2119 | ||
2120 | return page_remapped ? (page_remapped + page_offs) : NULL; | |
2121 | } | |
2122 | ||
2123 | /* | |
2124 | * Takes jobs of the Q and sends them to the hardware, then puts it on | |
2125 | * the Q to wait for completion. | |
2126 | */ | |
2127 | static void start_io( ctlr_info_t *h) | |
2128 | { | |
2129 | CommandList_struct *c; | |
2130 | ||
2131 | while(( c = h->reqQ) != NULL ) | |
2132 | { | |
2133 | /* can't do anything if fifo is full */ | |
2134 | if ((h->access.fifo_full(h))) { | |
2135 | printk(KERN_WARNING "cciss: fifo full\n"); | |
2136 | break; | |
2137 | } | |
2138 | ||
2139 | /* Get the frist entry from the Request Q */ | |
2140 | removeQ(&(h->reqQ), c); | |
2141 | h->Qdepth--; | |
2142 | ||
2143 | /* Tell the controller execute command */ | |
2144 | h->access.submit_command(h, c); | |
2145 | ||
2146 | /* Put job onto the completed Q */ | |
2147 | addQ (&(h->cmpQ), c); | |
2148 | } | |
2149 | } | |
2150 | ||
2151 | static inline void complete_buffers(struct bio *bio, int status) | |
2152 | { | |
2153 | while (bio) { | |
2154 | struct bio *xbh = bio->bi_next; | |
2155 | int nr_sectors = bio_sectors(bio); | |
2156 | ||
2157 | bio->bi_next = NULL; | |
2158 | blk_finished_io(len); | |
2159 | bio_endio(bio, nr_sectors << 9, status ? 0 : -EIO); | |
2160 | bio = xbh; | |
2161 | } | |
2162 | ||
2163 | } | |
2164 | /* Assumes that CCISS_LOCK(h->ctlr) is held. */ | |
2165 | /* Zeros out the error record and then resends the command back */ | |
2166 | /* to the controller */ | |
2167 | static inline void resend_cciss_cmd( ctlr_info_t *h, CommandList_struct *c) | |
2168 | { | |
2169 | /* erase the old error information */ | |
2170 | memset(c->err_info, 0, sizeof(ErrorInfo_struct)); | |
2171 | ||
2172 | /* add it to software queue and then send it to the controller */ | |
2173 | addQ(&(h->reqQ),c); | |
2174 | h->Qdepth++; | |
2175 | if(h->Qdepth > h->maxQsinceinit) | |
2176 | h->maxQsinceinit = h->Qdepth; | |
2177 | ||
2178 | start_io(h); | |
2179 | } | |
2180 | /* checks the status of the job and calls complete buffers to mark all | |
2181 | * buffers for the completed job. | |
2182 | */ | |
2183 | static inline void complete_command( ctlr_info_t *h, CommandList_struct *cmd, | |
2184 | int timeout) | |
2185 | { | |
2186 | int status = 1; | |
2187 | int i; | |
2188 | int retry_cmd = 0; | |
2189 | u64bit temp64; | |
2190 | ||
2191 | if (timeout) | |
2192 | status = 0; | |
2193 | ||
2194 | if(cmd->err_info->CommandStatus != 0) | |
2195 | { /* an error has occurred */ | |
2196 | switch(cmd->err_info->CommandStatus) | |
2197 | { | |
2198 | unsigned char sense_key; | |
2199 | case CMD_TARGET_STATUS: | |
2200 | status = 0; | |
2201 | ||
2202 | if( cmd->err_info->ScsiStatus == 0x02) | |
2203 | { | |
2204 | printk(KERN_WARNING "cciss: cmd %p " | |
2205 | "has CHECK CONDITION " | |
2206 | " byte 2 = 0x%x\n", cmd, | |
2207 | cmd->err_info->SenseInfo[2] | |
2208 | ); | |
2209 | /* check the sense key */ | |
2210 | sense_key = 0xf & | |
2211 | cmd->err_info->SenseInfo[2]; | |
2212 | /* no status or recovered error */ | |
2213 | if((sense_key == 0x0) || | |
2214 | (sense_key == 0x1)) | |
2215 | { | |
2216 | status = 1; | |
2217 | } | |
2218 | } else | |
2219 | { | |
2220 | printk(KERN_WARNING "cciss: cmd %p " | |
2221 | "has SCSI Status 0x%x\n", | |
2222 | cmd, cmd->err_info->ScsiStatus); | |
2223 | } | |
2224 | break; | |
2225 | case CMD_DATA_UNDERRUN: | |
2226 | printk(KERN_WARNING "cciss: cmd %p has" | |
2227 | " completed with data underrun " | |
2228 | "reported\n", cmd); | |
2229 | break; | |
2230 | case CMD_DATA_OVERRUN: | |
2231 | printk(KERN_WARNING "cciss: cmd %p has" | |
2232 | " completed with data overrun " | |
2233 | "reported\n", cmd); | |
2234 | break; | |
2235 | case CMD_INVALID: | |
2236 | printk(KERN_WARNING "cciss: cmd %p is " | |
2237 | "reported invalid\n", cmd); | |
2238 | status = 0; | |
2239 | break; | |
2240 | case CMD_PROTOCOL_ERR: | |
2241 | printk(KERN_WARNING "cciss: cmd %p has " | |
2242 | "protocol error \n", cmd); | |
2243 | status = 0; | |
2244 | break; | |
2245 | case CMD_HARDWARE_ERR: | |
2246 | printk(KERN_WARNING "cciss: cmd %p had " | |
2247 | " hardware error\n", cmd); | |
2248 | status = 0; | |
2249 | break; | |
2250 | case CMD_CONNECTION_LOST: | |
2251 | printk(KERN_WARNING "cciss: cmd %p had " | |
2252 | "connection lost\n", cmd); | |
2253 | status=0; | |
2254 | break; | |
2255 | case CMD_ABORTED: | |
2256 | printk(KERN_WARNING "cciss: cmd %p was " | |
2257 | "aborted\n", cmd); | |
2258 | status=0; | |
2259 | break; | |
2260 | case CMD_ABORT_FAILED: | |
2261 | printk(KERN_WARNING "cciss: cmd %p reports " | |
2262 | "abort failed\n", cmd); | |
2263 | status=0; | |
2264 | break; | |
2265 | case CMD_UNSOLICITED_ABORT: | |
2266 | printk(KERN_WARNING "cciss%d: unsolicited " | |
2267 | "abort %p\n", h->ctlr, cmd); | |
2268 | if (cmd->retry_count < MAX_CMD_RETRIES) { | |
2269 | retry_cmd=1; | |
2270 | printk(KERN_WARNING | |
2271 | "cciss%d: retrying %p\n", | |
2272 | h->ctlr, cmd); | |
2273 | cmd->retry_count++; | |
2274 | } else | |
2275 | printk(KERN_WARNING | |
2276 | "cciss%d: %p retried too " | |
2277 | "many times\n", h->ctlr, cmd); | |
2278 | status=0; | |
2279 | break; | |
2280 | case CMD_TIMEOUT: | |
2281 | printk(KERN_WARNING "cciss: cmd %p timedout\n", | |
2282 | cmd); | |
2283 | status=0; | |
2284 | break; | |
2285 | default: | |
2286 | printk(KERN_WARNING "cciss: cmd %p returned " | |
2287 | "unknown status %x\n", cmd, | |
2288 | cmd->err_info->CommandStatus); | |
2289 | status=0; | |
2290 | } | |
2291 | } | |
2292 | /* We need to return this command */ | |
2293 | if(retry_cmd) { | |
2294 | resend_cciss_cmd(h,cmd); | |
2295 | return; | |
2296 | } | |
2297 | /* command did not need to be retried */ | |
2298 | /* unmap the DMA mapping for all the scatter gather elements */ | |
2299 | for(i=0; i<cmd->Header.SGList; i++) { | |
2300 | temp64.val32.lower = cmd->SG[i].Addr.lower; | |
2301 | temp64.val32.upper = cmd->SG[i].Addr.upper; | |
2302 | pci_unmap_page(hba[cmd->ctlr]->pdev, | |
2303 | temp64.val, cmd->SG[i].Len, | |
2304 | (cmd->Request.Type.Direction == XFER_READ) ? | |
2305 | PCI_DMA_FROMDEVICE : PCI_DMA_TODEVICE); | |
2306 | } | |
2307 | complete_buffers(cmd->rq->bio, status); | |
2308 | ||
2309 | #ifdef CCISS_DEBUG | |
2310 | printk("Done with %p\n", cmd->rq); | |
2311 | #endif /* CCISS_DEBUG */ | |
2312 | ||
8ffdc655 | 2313 | end_that_request_last(cmd->rq, status ? 1 : -EIO); |
1da177e4 LT |
2314 | cmd_free(h,cmd,1); |
2315 | } | |
2316 | ||
2317 | /* | |
2318 | * Get a request and submit it to the controller. | |
2319 | */ | |
2320 | static void do_cciss_request(request_queue_t *q) | |
2321 | { | |
2322 | ctlr_info_t *h= q->queuedata; | |
2323 | CommandList_struct *c; | |
2324 | int start_blk, seg; | |
2325 | struct request *creq; | |
2326 | u64bit temp64; | |
2327 | struct scatterlist tmp_sg[MAXSGENTRIES]; | |
2328 | drive_info_struct *drv; | |
2329 | int i, dir; | |
2330 | ||
2331 | /* We call start_io here in case there is a command waiting on the | |
2332 | * queue that has not been sent. | |
2333 | */ | |
2334 | if (blk_queue_plugged(q)) | |
2335 | goto startio; | |
2336 | ||
2337 | queue: | |
2338 | creq = elv_next_request(q); | |
2339 | if (!creq) | |
2340 | goto startio; | |
2341 | ||
2342 | if (creq->nr_phys_segments > MAXSGENTRIES) | |
2343 | BUG(); | |
2344 | ||
2345 | if (( c = cmd_alloc(h, 1)) == NULL) | |
2346 | goto full; | |
2347 | ||
2348 | blkdev_dequeue_request(creq); | |
2349 | ||
2350 | spin_unlock_irq(q->queue_lock); | |
2351 | ||
2352 | c->cmd_type = CMD_RWREQ; | |
2353 | c->rq = creq; | |
2354 | ||
2355 | /* fill in the request */ | |
2356 | drv = creq->rq_disk->private_data; | |
2357 | c->Header.ReplyQueue = 0; // unused in simple mode | |
33079b21 MM |
2358 | /* got command from pool, so use the command block index instead */ |
2359 | /* for direct lookups. */ | |
2360 | /* The first 2 bits are reserved for controller error reporting. */ | |
2361 | c->Header.Tag.lower = (c->cmdindex << 3); | |
2362 | c->Header.Tag.lower |= 0x04; /* flag for direct lookup. */ | |
1da177e4 LT |
2363 | c->Header.LUN.LogDev.VolId= drv->LunID; |
2364 | c->Header.LUN.LogDev.Mode = 1; | |
2365 | c->Request.CDBLen = 10; // 12 byte commands not in FW yet; | |
2366 | c->Request.Type.Type = TYPE_CMD; // It is a command. | |
2367 | c->Request.Type.Attribute = ATTR_SIMPLE; | |
2368 | c->Request.Type.Direction = | |
2369 | (rq_data_dir(creq) == READ) ? XFER_READ: XFER_WRITE; | |
2370 | c->Request.Timeout = 0; // Don't time out | |
2371 | c->Request.CDB[0] = (rq_data_dir(creq) == READ) ? CCISS_READ : CCISS_WRITE; | |
2372 | start_blk = creq->sector; | |
2373 | #ifdef CCISS_DEBUG | |
2374 | printk(KERN_DEBUG "ciss: sector =%d nr_sectors=%d\n",(int) creq->sector, | |
2375 | (int) creq->nr_sectors); | |
2376 | #endif /* CCISS_DEBUG */ | |
2377 | ||
2378 | seg = blk_rq_map_sg(q, creq, tmp_sg); | |
2379 | ||
2380 | /* get the DMA records for the setup */ | |
2381 | if (c->Request.Type.Direction == XFER_READ) | |
2382 | dir = PCI_DMA_FROMDEVICE; | |
2383 | else | |
2384 | dir = PCI_DMA_TODEVICE; | |
2385 | ||
2386 | for (i=0; i<seg; i++) | |
2387 | { | |
2388 | c->SG[i].Len = tmp_sg[i].length; | |
2389 | temp64.val = (__u64) pci_map_page(h->pdev, tmp_sg[i].page, | |
2390 | tmp_sg[i].offset, tmp_sg[i].length, | |
2391 | dir); | |
2392 | c->SG[i].Addr.lower = temp64.val32.lower; | |
2393 | c->SG[i].Addr.upper = temp64.val32.upper; | |
2394 | c->SG[i].Ext = 0; // we are not chaining | |
2395 | } | |
2396 | /* track how many SG entries we are using */ | |
2397 | if( seg > h->maxSG) | |
2398 | h->maxSG = seg; | |
2399 | ||
2400 | #ifdef CCISS_DEBUG | |
2401 | printk(KERN_DEBUG "cciss: Submitting %d sectors in %d segments\n", creq->nr_sectors, seg); | |
2402 | #endif /* CCISS_DEBUG */ | |
2403 | ||
2404 | c->Header.SGList = c->Header.SGTotal = seg; | |
2405 | c->Request.CDB[1]= 0; | |
2406 | c->Request.CDB[2]= (start_blk >> 24) & 0xff; //MSB | |
2407 | c->Request.CDB[3]= (start_blk >> 16) & 0xff; | |
2408 | c->Request.CDB[4]= (start_blk >> 8) & 0xff; | |
2409 | c->Request.CDB[5]= start_blk & 0xff; | |
2410 | c->Request.CDB[6]= 0; // (sect >> 24) & 0xff; MSB | |
2411 | c->Request.CDB[7]= (creq->nr_sectors >> 8) & 0xff; | |
2412 | c->Request.CDB[8]= creq->nr_sectors & 0xff; | |
2413 | c->Request.CDB[9] = c->Request.CDB[11] = c->Request.CDB[12] = 0; | |
2414 | ||
2415 | spin_lock_irq(q->queue_lock); | |
2416 | ||
2417 | addQ(&(h->reqQ),c); | |
2418 | h->Qdepth++; | |
2419 | if(h->Qdepth > h->maxQsinceinit) | |
2420 | h->maxQsinceinit = h->Qdepth; | |
2421 | ||
2422 | goto queue; | |
2423 | full: | |
2424 | blk_stop_queue(q); | |
2425 | startio: | |
2426 | /* We will already have the driver lock here so not need | |
2427 | * to lock it. | |
2428 | */ | |
2429 | start_io(h); | |
2430 | } | |
2431 | ||
3da8b713 | 2432 | static inline unsigned long get_next_completion(ctlr_info_t *h) |
2433 | { | |
2434 | #ifdef CONFIG_CISS_SCSI_TAPE | |
2435 | /* Any rejects from sendcmd() lying around? Process them first */ | |
2436 | if (h->scsi_rejects.ncompletions == 0) | |
2437 | return h->access.command_completed(h); | |
2438 | else { | |
2439 | struct sendcmd_reject_list *srl; | |
2440 | int n; | |
2441 | srl = &h->scsi_rejects; | |
2442 | n = --srl->ncompletions; | |
2443 | /* printk("cciss%d: processing saved reject\n", h->ctlr); */ | |
2444 | printk("p"); | |
2445 | return srl->complete[n]; | |
2446 | } | |
2447 | #else | |
2448 | return h->access.command_completed(h); | |
2449 | #endif | |
2450 | } | |
2451 | ||
2452 | static inline int interrupt_pending(ctlr_info_t *h) | |
2453 | { | |
2454 | #ifdef CONFIG_CISS_SCSI_TAPE | |
2455 | return ( h->access.intr_pending(h) | |
2456 | || (h->scsi_rejects.ncompletions > 0)); | |
2457 | #else | |
2458 | return h->access.intr_pending(h); | |
2459 | #endif | |
2460 | } | |
2461 | ||
2462 | static inline long interrupt_not_for_us(ctlr_info_t *h) | |
2463 | { | |
2464 | #ifdef CONFIG_CISS_SCSI_TAPE | |
2465 | return (((h->access.intr_pending(h) == 0) || | |
2466 | (h->interrupts_enabled == 0)) | |
2467 | && (h->scsi_rejects.ncompletions == 0)); | |
2468 | #else | |
2469 | return (((h->access.intr_pending(h) == 0) || | |
2470 | (h->interrupts_enabled == 0))); | |
2471 | #endif | |
2472 | } | |
2473 | ||
1da177e4 LT |
2474 | static irqreturn_t do_cciss_intr(int irq, void *dev_id, struct pt_regs *regs) |
2475 | { | |
2476 | ctlr_info_t *h = dev_id; | |
2477 | CommandList_struct *c; | |
2478 | unsigned long flags; | |
33079b21 | 2479 | __u32 a, a1, a2; |
1da177e4 LT |
2480 | int j; |
2481 | int start_queue = h->next_to_run; | |
2482 | ||
3da8b713 | 2483 | if (interrupt_not_for_us(h)) |
1da177e4 | 2484 | return IRQ_NONE; |
1da177e4 LT |
2485 | /* |
2486 | * If there are completed commands in the completion queue, | |
2487 | * we had better do something about it. | |
2488 | */ | |
2489 | spin_lock_irqsave(CCISS_LOCK(h->ctlr), flags); | |
3da8b713 | 2490 | while (interrupt_pending(h)) { |
2491 | while((a = get_next_completion(h)) != FIFO_EMPTY) { | |
1da177e4 | 2492 | a1 = a; |
33079b21 MM |
2493 | if ((a & 0x04)) { |
2494 | a2 = (a >> 3); | |
2495 | if (a2 >= NR_CMDS) { | |
2496 | printk(KERN_WARNING "cciss: controller cciss%d failed, stopping.\n", h->ctlr); | |
2497 | fail_all_cmds(h->ctlr); | |
2498 | return IRQ_HANDLED; | |
2499 | } | |
2500 | ||
2501 | c = h->cmd_pool + a2; | |
2502 | a = c->busaddr; | |
2503 | ||
2504 | } else { | |
1da177e4 | 2505 | a &= ~3; |
33079b21 MM |
2506 | if ((c = h->cmpQ) == NULL) { |
2507 | printk(KERN_WARNING "cciss: Completion of %08x ignored\n", a1); | |
1da177e4 LT |
2508 | continue; |
2509 | } | |
2510 | while(c->busaddr != a) { | |
2511 | c = c->next; | |
2512 | if (c == h->cmpQ) | |
2513 | break; | |
2514 | } | |
33079b21 | 2515 | } |
1da177e4 LT |
2516 | /* |
2517 | * If we've found the command, take it off the | |
2518 | * completion Q and free it | |
2519 | */ | |
2520 | if (c->busaddr == a) { | |
2521 | removeQ(&h->cmpQ, c); | |
2522 | if (c->cmd_type == CMD_RWREQ) { | |
2523 | complete_command(h, c, 0); | |
2524 | } else if (c->cmd_type == CMD_IOCTL_PEND) { | |
2525 | complete(c->waiting); | |
2526 | } | |
2527 | # ifdef CONFIG_CISS_SCSI_TAPE | |
2528 | else if (c->cmd_type == CMD_SCSI) | |
2529 | complete_scsi_command(c, 0, a1); | |
2530 | # endif | |
2531 | continue; | |
2532 | } | |
2533 | } | |
2534 | } | |
2535 | ||
2536 | /* check to see if we have maxed out the number of commands that can | |
2537 | * be placed on the queue. If so then exit. We do this check here | |
2538 | * in case the interrupt we serviced was from an ioctl and did not | |
2539 | * free any new commands. | |
2540 | */ | |
2541 | if ((find_first_zero_bit(h->cmd_pool_bits, NR_CMDS)) == NR_CMDS) | |
2542 | goto cleanup; | |
2543 | ||
2544 | /* We have room on the queue for more commands. Now we need to queue | |
2545 | * them up. We will also keep track of the next queue to run so | |
2546 | * that every queue gets a chance to be started first. | |
2547 | */ | |
ad2b9312 MM |
2548 | for (j=0; j < h->highest_lun + 1; j++){ |
2549 | int curr_queue = (start_queue + j) % (h->highest_lun + 1); | |
1da177e4 LT |
2550 | /* make sure the disk has been added and the drive is real |
2551 | * because this can be called from the middle of init_one. | |
2552 | */ | |
ad2b9312 | 2553 | if(!(h->drv[curr_queue].queue) || |
1da177e4 LT |
2554 | !(h->drv[curr_queue].heads)) |
2555 | continue; | |
2556 | blk_start_queue(h->gendisk[curr_queue]->queue); | |
2557 | ||
2558 | /* check to see if we have maxed out the number of commands | |
2559 | * that can be placed on the queue. | |
2560 | */ | |
2561 | if ((find_first_zero_bit(h->cmd_pool_bits, NR_CMDS)) == NR_CMDS) | |
2562 | { | |
2563 | if (curr_queue == start_queue){ | |
ad2b9312 | 2564 | h->next_to_run = (start_queue + 1) % (h->highest_lun + 1); |
1da177e4 LT |
2565 | goto cleanup; |
2566 | } else { | |
2567 | h->next_to_run = curr_queue; | |
2568 | goto cleanup; | |
2569 | } | |
2570 | } else { | |
ad2b9312 | 2571 | curr_queue = (curr_queue + 1) % (h->highest_lun + 1); |
1da177e4 LT |
2572 | } |
2573 | } | |
2574 | ||
2575 | cleanup: | |
2576 | spin_unlock_irqrestore(CCISS_LOCK(h->ctlr), flags); | |
2577 | return IRQ_HANDLED; | |
2578 | } | |
1da177e4 LT |
2579 | /* |
2580 | * We cannot read the structure directly, for portablity we must use | |
2581 | * the io functions. | |
2582 | * This is for debug only. | |
2583 | */ | |
2584 | #ifdef CCISS_DEBUG | |
2585 | static void print_cfg_table( CfgTable_struct *tb) | |
2586 | { | |
2587 | int i; | |
2588 | char temp_name[17]; | |
2589 | ||
2590 | printk("Controller Configuration information\n"); | |
2591 | printk("------------------------------------\n"); | |
2592 | for(i=0;i<4;i++) | |
2593 | temp_name[i] = readb(&(tb->Signature[i])); | |
2594 | temp_name[4]='\0'; | |
2595 | printk(" Signature = %s\n", temp_name); | |
2596 | printk(" Spec Number = %d\n", readl(&(tb->SpecValence))); | |
2597 | printk(" Transport methods supported = 0x%x\n", | |
2598 | readl(&(tb-> TransportSupport))); | |
2599 | printk(" Transport methods active = 0x%x\n", | |
2600 | readl(&(tb->TransportActive))); | |
2601 | printk(" Requested transport Method = 0x%x\n", | |
2602 | readl(&(tb->HostWrite.TransportRequest))); | |
2603 | printk(" Coalese Interrupt Delay = 0x%x\n", | |
2604 | readl(&(tb->HostWrite.CoalIntDelay))); | |
2605 | printk(" Coalese Interrupt Count = 0x%x\n", | |
2606 | readl(&(tb->HostWrite.CoalIntCount))); | |
2607 | printk(" Max outstanding commands = 0x%d\n", | |
2608 | readl(&(tb->CmdsOutMax))); | |
2609 | printk(" Bus Types = 0x%x\n", readl(&(tb-> BusTypes))); | |
2610 | for(i=0;i<16;i++) | |
2611 | temp_name[i] = readb(&(tb->ServerName[i])); | |
2612 | temp_name[16] = '\0'; | |
2613 | printk(" Server Name = %s\n", temp_name); | |
2614 | printk(" Heartbeat Counter = 0x%x\n\n\n", | |
2615 | readl(&(tb->HeartBeat))); | |
2616 | } | |
2617 | #endif /* CCISS_DEBUG */ | |
2618 | ||
2619 | static void release_io_mem(ctlr_info_t *c) | |
2620 | { | |
2621 | /* if IO mem was not protected do nothing */ | |
2622 | if( c->io_mem_addr == 0) | |
2623 | return; | |
2624 | release_region(c->io_mem_addr, c->io_mem_length); | |
2625 | c->io_mem_addr = 0; | |
2626 | c->io_mem_length = 0; | |
2627 | } | |
2628 | ||
2629 | static int find_PCI_BAR_index(struct pci_dev *pdev, | |
2630 | unsigned long pci_bar_addr) | |
2631 | { | |
2632 | int i, offset, mem_type, bar_type; | |
2633 | if (pci_bar_addr == PCI_BASE_ADDRESS_0) /* looking for BAR zero? */ | |
2634 | return 0; | |
2635 | offset = 0; | |
2636 | for (i=0; i<DEVICE_COUNT_RESOURCE; i++) { | |
2637 | bar_type = pci_resource_flags(pdev, i) & | |
2638 | PCI_BASE_ADDRESS_SPACE; | |
2639 | if (bar_type == PCI_BASE_ADDRESS_SPACE_IO) | |
2640 | offset += 4; | |
2641 | else { | |
2642 | mem_type = pci_resource_flags(pdev, i) & | |
2643 | PCI_BASE_ADDRESS_MEM_TYPE_MASK; | |
2644 | switch (mem_type) { | |
2645 | case PCI_BASE_ADDRESS_MEM_TYPE_32: | |
2646 | case PCI_BASE_ADDRESS_MEM_TYPE_1M: | |
2647 | offset += 4; /* 32 bit */ | |
2648 | break; | |
2649 | case PCI_BASE_ADDRESS_MEM_TYPE_64: | |
2650 | offset += 8; | |
2651 | break; | |
2652 | default: /* reserved in PCI 2.2 */ | |
2653 | printk(KERN_WARNING "Base address is invalid\n"); | |
2654 | return -1; | |
2655 | break; | |
2656 | } | |
2657 | } | |
2658 | if (offset == pci_bar_addr - PCI_BASE_ADDRESS_0) | |
2659 | return i+1; | |
2660 | } | |
2661 | return -1; | |
2662 | } | |
2663 | ||
2664 | static int cciss_pci_init(ctlr_info_t *c, struct pci_dev *pdev) | |
2665 | { | |
2666 | ushort subsystem_vendor_id, subsystem_device_id, command; | |
2667 | __u32 board_id, scratchpad = 0; | |
2668 | __u64 cfg_offset; | |
2669 | __u32 cfg_base_addr; | |
2670 | __u64 cfg_base_addr_index; | |
2671 | int i; | |
2672 | ||
2673 | /* check to see if controller has been disabled */ | |
2674 | /* BEFORE trying to enable it */ | |
2675 | (void) pci_read_config_word(pdev, PCI_COMMAND,&command); | |
2676 | if(!(command & 0x02)) | |
2677 | { | |
2678 | printk(KERN_WARNING "cciss: controller appears to be disabled\n"); | |
2679 | return(-1); | |
2680 | } | |
2681 | ||
2682 | if (pci_enable_device(pdev)) | |
2683 | { | |
2684 | printk(KERN_ERR "cciss: Unable to Enable PCI device\n"); | |
2685 | return( -1); | |
2686 | } | |
1da177e4 LT |
2687 | |
2688 | subsystem_vendor_id = pdev->subsystem_vendor; | |
2689 | subsystem_device_id = pdev->subsystem_device; | |
2690 | board_id = (((__u32) (subsystem_device_id << 16) & 0xffff0000) | | |
2691 | subsystem_vendor_id); | |
2692 | ||
2693 | /* search for our IO range so we can protect it */ | |
2694 | for(i=0; i<DEVICE_COUNT_RESOURCE; i++) | |
2695 | { | |
2696 | /* is this an IO range */ | |
2697 | if( pci_resource_flags(pdev, i) & 0x01 ) { | |
2698 | c->io_mem_addr = pci_resource_start(pdev, i); | |
2699 | c->io_mem_length = pci_resource_end(pdev, i) - | |
2700 | pci_resource_start(pdev, i) +1; | |
2701 | #ifdef CCISS_DEBUG | |
2702 | printk("IO value found base_addr[%d] %lx %lx\n", i, | |
2703 | c->io_mem_addr, c->io_mem_length); | |
2704 | #endif /* CCISS_DEBUG */ | |
2705 | /* register the IO range */ | |
2706 | if(!request_region( c->io_mem_addr, | |
2707 | c->io_mem_length, "cciss")) | |
2708 | { | |
2709 | printk(KERN_WARNING "cciss I/O memory range already in use addr=%lx length=%ld\n", | |
2710 | c->io_mem_addr, c->io_mem_length); | |
2711 | c->io_mem_addr= 0; | |
2712 | c->io_mem_length = 0; | |
2713 | } | |
2714 | break; | |
2715 | } | |
2716 | } | |
2717 | ||
2718 | #ifdef CCISS_DEBUG | |
2719 | printk("command = %x\n", command); | |
2720 | printk("irq = %x\n", pdev->irq); | |
2721 | printk("board_id = %x\n", board_id); | |
2722 | #endif /* CCISS_DEBUG */ | |
2723 | ||
2724 | c->intr = pdev->irq; | |
2725 | ||
2726 | /* | |
2727 | * Memory base addr is first addr , the second points to the config | |
2728 | * table | |
2729 | */ | |
2730 | ||
2731 | c->paddr = pci_resource_start(pdev, 0); /* addressing mode bits already removed */ | |
2732 | #ifdef CCISS_DEBUG | |
2733 | printk("address 0 = %x\n", c->paddr); | |
2734 | #endif /* CCISS_DEBUG */ | |
2735 | c->vaddr = remap_pci_mem(c->paddr, 200); | |
2736 | ||
2737 | /* Wait for the board to become ready. (PCI hotplug needs this.) | |
2738 | * We poll for up to 120 secs, once per 100ms. */ | |
2739 | for (i=0; i < 1200; i++) { | |
2740 | scratchpad = readl(c->vaddr + SA5_SCRATCHPAD_OFFSET); | |
2741 | if (scratchpad == CCISS_FIRMWARE_READY) | |
2742 | break; | |
2743 | set_current_state(TASK_INTERRUPTIBLE); | |
2744 | schedule_timeout(HZ / 10); /* wait 100ms */ | |
2745 | } | |
2746 | if (scratchpad != CCISS_FIRMWARE_READY) { | |
2747 | printk(KERN_WARNING "cciss: Board not ready. Timed out.\n"); | |
2748 | return -1; | |
2749 | } | |
2750 | ||
2751 | /* get the address index number */ | |
2752 | cfg_base_addr = readl(c->vaddr + SA5_CTCFG_OFFSET); | |
2753 | cfg_base_addr &= (__u32) 0x0000ffff; | |
2754 | #ifdef CCISS_DEBUG | |
2755 | printk("cfg base address = %x\n", cfg_base_addr); | |
2756 | #endif /* CCISS_DEBUG */ | |
2757 | cfg_base_addr_index = | |
2758 | find_PCI_BAR_index(pdev, cfg_base_addr); | |
2759 | #ifdef CCISS_DEBUG | |
2760 | printk("cfg base address index = %x\n", cfg_base_addr_index); | |
2761 | #endif /* CCISS_DEBUG */ | |
2762 | if (cfg_base_addr_index == -1) { | |
2763 | printk(KERN_WARNING "cciss: Cannot find cfg_base_addr_index\n"); | |
2764 | release_io_mem(c); | |
2765 | return -1; | |
2766 | } | |
2767 | ||
2768 | cfg_offset = readl(c->vaddr + SA5_CTMEM_OFFSET); | |
2769 | #ifdef CCISS_DEBUG | |
2770 | printk("cfg offset = %x\n", cfg_offset); | |
2771 | #endif /* CCISS_DEBUG */ | |
2772 | c->cfgtable = remap_pci_mem(pci_resource_start(pdev, | |
2773 | cfg_base_addr_index) + cfg_offset, | |
2774 | sizeof(CfgTable_struct)); | |
2775 | c->board_id = board_id; | |
2776 | ||
2777 | #ifdef CCISS_DEBUG | |
2778 | print_cfg_table(c->cfgtable); | |
2779 | #endif /* CCISS_DEBUG */ | |
2780 | ||
2781 | for(i=0; i<NR_PRODUCTS; i++) { | |
2782 | if (board_id == products[i].board_id) { | |
2783 | c->product_name = products[i].product_name; | |
2784 | c->access = *(products[i].access); | |
2785 | break; | |
2786 | } | |
2787 | } | |
2788 | if (i == NR_PRODUCTS) { | |
2789 | printk(KERN_WARNING "cciss: Sorry, I don't know how" | |
2790 | " to access the Smart Array controller %08lx\n", | |
2791 | (unsigned long)board_id); | |
2792 | return -1; | |
2793 | } | |
2794 | if ( (readb(&c->cfgtable->Signature[0]) != 'C') || | |
2795 | (readb(&c->cfgtable->Signature[1]) != 'I') || | |
2796 | (readb(&c->cfgtable->Signature[2]) != 'S') || | |
2797 | (readb(&c->cfgtable->Signature[3]) != 'S') ) | |
2798 | { | |
2799 | printk("Does not appear to be a valid CISS config table\n"); | |
2800 | return -1; | |
2801 | } | |
2802 | ||
2803 | #ifdef CONFIG_X86 | |
2804 | { | |
2805 | /* Need to enable prefetch in the SCSI core for 6400 in x86 */ | |
2806 | __u32 prefetch; | |
2807 | prefetch = readl(&(c->cfgtable->SCSI_Prefetch)); | |
2808 | prefetch |= 0x100; | |
2809 | writel(prefetch, &(c->cfgtable->SCSI_Prefetch)); | |
2810 | } | |
2811 | #endif | |
2812 | ||
2813 | #ifdef CCISS_DEBUG | |
2814 | printk("Trying to put board into Simple mode\n"); | |
2815 | #endif /* CCISS_DEBUG */ | |
2816 | c->max_commands = readl(&(c->cfgtable->CmdsOutMax)); | |
2817 | /* Update the field, and then ring the doorbell */ | |
2818 | writel( CFGTBL_Trans_Simple, | |
2819 | &(c->cfgtable->HostWrite.TransportRequest)); | |
2820 | writel( CFGTBL_ChangeReq, c->vaddr + SA5_DOORBELL); | |
2821 | ||
2822 | /* under certain very rare conditions, this can take awhile. | |
2823 | * (e.g.: hot replace a failed 144GB drive in a RAID 5 set right | |
2824 | * as we enter this code.) */ | |
2825 | for(i=0;i<MAX_CONFIG_WAIT;i++) { | |
2826 | if (!(readl(c->vaddr + SA5_DOORBELL) & CFGTBL_ChangeReq)) | |
2827 | break; | |
2828 | /* delay and try again */ | |
2829 | set_current_state(TASK_INTERRUPTIBLE); | |
2830 | schedule_timeout(10); | |
2831 | } | |
2832 | ||
2833 | #ifdef CCISS_DEBUG | |
2834 | printk(KERN_DEBUG "I counter got to %d %x\n", i, readl(c->vaddr + SA5_DOORBELL)); | |
2835 | #endif /* CCISS_DEBUG */ | |
2836 | #ifdef CCISS_DEBUG | |
2837 | print_cfg_table(c->cfgtable); | |
2838 | #endif /* CCISS_DEBUG */ | |
2839 | ||
2840 | if (!(readl(&(c->cfgtable->TransportActive)) & CFGTBL_Trans_Simple)) | |
2841 | { | |
2842 | printk(KERN_WARNING "cciss: unable to get board into" | |
2843 | " simple mode\n"); | |
2844 | return -1; | |
2845 | } | |
2846 | return 0; | |
2847 | ||
2848 | } | |
2849 | ||
2850 | /* | |
2851 | * Gets information about the local volumes attached to the controller. | |
2852 | */ | |
2853 | static void cciss_getgeometry(int cntl_num) | |
2854 | { | |
2855 | ReportLunData_struct *ld_buff; | |
2856 | ReadCapdata_struct *size_buff; | |
2857 | InquiryData_struct *inq_buff; | |
2858 | int return_code; | |
2859 | int i; | |
2860 | int listlength = 0; | |
2861 | __u32 lunid = 0; | |
2862 | int block_size; | |
2863 | int total_size; | |
2864 | ||
2865 | ld_buff = kmalloc(sizeof(ReportLunData_struct), GFP_KERNEL); | |
2866 | if (ld_buff == NULL) | |
2867 | { | |
2868 | printk(KERN_ERR "cciss: out of memory\n"); | |
2869 | return; | |
2870 | } | |
2871 | memset(ld_buff, 0, sizeof(ReportLunData_struct)); | |
2872 | size_buff = kmalloc(sizeof( ReadCapdata_struct), GFP_KERNEL); | |
2873 | if (size_buff == NULL) | |
2874 | { | |
2875 | printk(KERN_ERR "cciss: out of memory\n"); | |
2876 | kfree(ld_buff); | |
2877 | return; | |
2878 | } | |
2879 | inq_buff = kmalloc(sizeof( InquiryData_struct), GFP_KERNEL); | |
2880 | if (inq_buff == NULL) | |
2881 | { | |
2882 | printk(KERN_ERR "cciss: out of memory\n"); | |
2883 | kfree(ld_buff); | |
2884 | kfree(size_buff); | |
2885 | return; | |
2886 | } | |
2887 | /* Get the firmware version */ | |
2888 | return_code = sendcmd(CISS_INQUIRY, cntl_num, inq_buff, | |
2889 | sizeof(InquiryData_struct), 0, 0 ,0, NULL, TYPE_CMD); | |
2890 | if (return_code == IO_OK) | |
2891 | { | |
2892 | hba[cntl_num]->firm_ver[0] = inq_buff->data_byte[32]; | |
2893 | hba[cntl_num]->firm_ver[1] = inq_buff->data_byte[33]; | |
2894 | hba[cntl_num]->firm_ver[2] = inq_buff->data_byte[34]; | |
2895 | hba[cntl_num]->firm_ver[3] = inq_buff->data_byte[35]; | |
2896 | } else /* send command failed */ | |
2897 | { | |
2898 | printk(KERN_WARNING "cciss: unable to determine firmware" | |
2899 | " version of controller\n"); | |
2900 | } | |
2901 | /* Get the number of logical volumes */ | |
2902 | return_code = sendcmd(CISS_REPORT_LOG, cntl_num, ld_buff, | |
2903 | sizeof(ReportLunData_struct), 0, 0, 0, NULL, TYPE_CMD); | |
2904 | ||
2905 | if( return_code == IO_OK) | |
2906 | { | |
2907 | #ifdef CCISS_DEBUG | |
2908 | printk("LUN Data\n--------------------------\n"); | |
2909 | #endif /* CCISS_DEBUG */ | |
2910 | ||
2911 | listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[0])) << 24; | |
2912 | listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[1])) << 16; | |
2913 | listlength |= (0xff & (unsigned int)(ld_buff->LUNListLength[2])) << 8; | |
2914 | listlength |= 0xff & (unsigned int)(ld_buff->LUNListLength[3]); | |
2915 | } else /* reading number of logical volumes failed */ | |
2916 | { | |
2917 | printk(KERN_WARNING "cciss: report logical volume" | |
2918 | " command failed\n"); | |
2919 | listlength = 0; | |
2920 | } | |
2921 | hba[cntl_num]->num_luns = listlength / 8; // 8 bytes pre entry | |
2922 | if (hba[cntl_num]->num_luns > CISS_MAX_LUN) | |
2923 | { | |
2924 | printk(KERN_ERR "ciss: only %d number of logical volumes supported\n", | |
2925 | CISS_MAX_LUN); | |
2926 | hba[cntl_num]->num_luns = CISS_MAX_LUN; | |
2927 | } | |
2928 | #ifdef CCISS_DEBUG | |
2929 | printk(KERN_DEBUG "Length = %x %x %x %x = %d\n", ld_buff->LUNListLength[0], | |
2930 | ld_buff->LUNListLength[1], ld_buff->LUNListLength[2], | |
2931 | ld_buff->LUNListLength[3], hba[cntl_num]->num_luns); | |
2932 | #endif /* CCISS_DEBUG */ | |
2933 | ||
2934 | hba[cntl_num]->highest_lun = hba[cntl_num]->num_luns-1; | |
ddd47442 MM |
2935 | // for(i=0; i< hba[cntl_num]->num_luns; i++) |
2936 | for(i=0; i < CISS_MAX_LUN; i++) | |
1da177e4 | 2937 | { |
ddd47442 MM |
2938 | if (i < hba[cntl_num]->num_luns){ |
2939 | lunid = (0xff & (unsigned int)(ld_buff->LUN[i][3])) | |
2940 | << 24; | |
2941 | lunid |= (0xff & (unsigned int)(ld_buff->LUN[i][2])) | |
2942 | << 16; | |
2943 | lunid |= (0xff & (unsigned int)(ld_buff->LUN[i][1])) | |
2944 | << 8; | |
1da177e4 LT |
2945 | lunid |= 0xff & (unsigned int)(ld_buff->LUN[i][0]); |
2946 | ||
2947 | hba[cntl_num]->drv[i].LunID = lunid; | |
2948 | ||
2949 | ||
2950 | #ifdef CCISS_DEBUG | |
2951 | printk(KERN_DEBUG "LUN[%d]: %x %x %x %x = %x\n", i, | |
ddd47442 MM |
2952 | ld_buff->LUN[i][0], ld_buff->LUN[i][1], |
2953 | ld_buff->LUN[i][2], ld_buff->LUN[i][3], | |
2954 | hba[cntl_num]->drv[i].LunID); | |
1da177e4 LT |
2955 | #endif /* CCISS_DEBUG */ |
2956 | cciss_read_capacity(cntl_num, i, size_buff, 0, | |
2957 | &total_size, &block_size); | |
ddd47442 MM |
2958 | cciss_geometry_inquiry(cntl_num, i, 0, total_size, |
2959 | block_size, inq_buff, &hba[cntl_num]->drv[i]); | |
2960 | } else { | |
2961 | /* initialize raid_level to indicate a free space */ | |
2962 | hba[cntl_num]->drv[i].raid_level = -1; | |
2963 | } | |
1da177e4 LT |
2964 | } |
2965 | kfree(ld_buff); | |
2966 | kfree(size_buff); | |
2967 | kfree(inq_buff); | |
2968 | } | |
2969 | ||
2970 | /* Function to find the first free pointer into our hba[] array */ | |
2971 | /* Returns -1 if no free entries are left. */ | |
2972 | static int alloc_cciss_hba(void) | |
2973 | { | |
2974 | struct gendisk *disk[NWD]; | |
2975 | int i, n; | |
2976 | for (n = 0; n < NWD; n++) { | |
2977 | disk[n] = alloc_disk(1 << NWD_SHIFT); | |
2978 | if (!disk[n]) | |
2979 | goto out; | |
2980 | } | |
2981 | ||
2982 | for(i=0; i< MAX_CTLR; i++) { | |
2983 | if (!hba[i]) { | |
2984 | ctlr_info_t *p; | |
2985 | p = kmalloc(sizeof(ctlr_info_t), GFP_KERNEL); | |
2986 | if (!p) | |
2987 | goto Enomem; | |
2988 | memset(p, 0, sizeof(ctlr_info_t)); | |
2989 | for (n = 0; n < NWD; n++) | |
2990 | p->gendisk[n] = disk[n]; | |
2991 | hba[i] = p; | |
2992 | return i; | |
2993 | } | |
2994 | } | |
2995 | printk(KERN_WARNING "cciss: This driver supports a maximum" | |
2996 | " of %d controllers.\n", MAX_CTLR); | |
2997 | goto out; | |
2998 | Enomem: | |
2999 | printk(KERN_ERR "cciss: out of memory.\n"); | |
3000 | out: | |
3001 | while (n--) | |
3002 | put_disk(disk[n]); | |
3003 | return -1; | |
3004 | } | |
3005 | ||
3006 | static void free_hba(int i) | |
3007 | { | |
3008 | ctlr_info_t *p = hba[i]; | |
3009 | int n; | |
3010 | ||
3011 | hba[i] = NULL; | |
3012 | for (n = 0; n < NWD; n++) | |
3013 | put_disk(p->gendisk[n]); | |
3014 | kfree(p); | |
3015 | } | |
3016 | ||
3017 | /* | |
3018 | * This is it. Find all the controllers and register them. I really hate | |
3019 | * stealing all these major device numbers. | |
3020 | * returns the number of block devices registered. | |
3021 | */ | |
3022 | static int __devinit cciss_init_one(struct pci_dev *pdev, | |
3023 | const struct pci_device_id *ent) | |
3024 | { | |
3025 | request_queue_t *q; | |
3026 | int i; | |
3027 | int j; | |
3028 | int rc; | |
3029 | ||
3030 | printk(KERN_DEBUG "cciss: Device 0x%x has been found at" | |
3031 | " bus %d dev %d func %d\n", | |
3032 | pdev->device, pdev->bus->number, PCI_SLOT(pdev->devfn), | |
3033 | PCI_FUNC(pdev->devfn)); | |
3034 | i = alloc_cciss_hba(); | |
3035 | if(i < 0) | |
3036 | return (-1); | |
1f8ef380 MM |
3037 | |
3038 | hba[i]->busy_initializing = 1; | |
3039 | ||
1da177e4 LT |
3040 | if (cciss_pci_init(hba[i], pdev) != 0) |
3041 | goto clean1; | |
3042 | ||
3043 | sprintf(hba[i]->devname, "cciss%d", i); | |
3044 | hba[i]->ctlr = i; | |
3045 | hba[i]->pdev = pdev; | |
3046 | ||
3047 | /* configure PCI DMA stuff */ | |
eb0df996 | 3048 | if (!pci_set_dma_mask(pdev, DMA_64BIT_MASK)) |
1da177e4 | 3049 | printk("cciss: using DAC cycles\n"); |
eb0df996 | 3050 | else if (!pci_set_dma_mask(pdev, DMA_32BIT_MASK)) |
1da177e4 LT |
3051 | printk("cciss: not using DAC cycles\n"); |
3052 | else { | |
3053 | printk("cciss: no suitable DMA available\n"); | |
3054 | goto clean1; | |
3055 | } | |
3056 | ||
3057 | /* | |
3058 | * register with the major number, or get a dynamic major number | |
3059 | * by passing 0 as argument. This is done for greater than | |
3060 | * 8 controller support. | |
3061 | */ | |
3062 | if (i < MAX_CTLR_ORIG) | |
3063 | hba[i]->major = MAJOR_NR + i; | |
3064 | rc = register_blkdev(hba[i]->major, hba[i]->devname); | |
3065 | if(rc == -EBUSY || rc == -EINVAL) { | |
3066 | printk(KERN_ERR | |
3067 | "cciss: Unable to get major number %d for %s " | |
3068 | "on hba %d\n", hba[i]->major, hba[i]->devname, i); | |
3069 | goto clean1; | |
3070 | } | |
3071 | else { | |
3072 | if (i >= MAX_CTLR_ORIG) | |
3073 | hba[i]->major = rc; | |
3074 | } | |
3075 | ||
3076 | /* make sure the board interrupts are off */ | |
3077 | hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_OFF); | |
3078 | if( request_irq(hba[i]->intr, do_cciss_intr, | |
3079 | SA_INTERRUPT | SA_SHIRQ | SA_SAMPLE_RANDOM, | |
3080 | hba[i]->devname, hba[i])) { | |
3081 | printk(KERN_ERR "cciss: Unable to get irq %d for %s\n", | |
3082 | hba[i]->intr, hba[i]->devname); | |
3083 | goto clean2; | |
3084 | } | |
3085 | hba[i]->cmd_pool_bits = kmalloc(((NR_CMDS+BITS_PER_LONG-1)/BITS_PER_LONG)*sizeof(unsigned long), GFP_KERNEL); | |
3086 | hba[i]->cmd_pool = (CommandList_struct *)pci_alloc_consistent( | |
3087 | hba[i]->pdev, NR_CMDS * sizeof(CommandList_struct), | |
3088 | &(hba[i]->cmd_pool_dhandle)); | |
3089 | hba[i]->errinfo_pool = (ErrorInfo_struct *)pci_alloc_consistent( | |
3090 | hba[i]->pdev, NR_CMDS * sizeof( ErrorInfo_struct), | |
3091 | &(hba[i]->errinfo_pool_dhandle)); | |
3092 | if((hba[i]->cmd_pool_bits == NULL) | |
3093 | || (hba[i]->cmd_pool == NULL) | |
3094 | || (hba[i]->errinfo_pool == NULL)) { | |
3095 | printk( KERN_ERR "cciss: out of memory"); | |
3096 | goto clean4; | |
3097 | } | |
3da8b713 | 3098 | #ifdef CONFIG_CISS_SCSI_TAPE |
3099 | hba[i]->scsi_rejects.complete = | |
3100 | kmalloc(sizeof(hba[i]->scsi_rejects.complete[0]) * | |
3101 | (NR_CMDS + 5), GFP_KERNEL); | |
3102 | if (hba[i]->scsi_rejects.complete == NULL) { | |
3103 | printk( KERN_ERR "cciss: out of memory"); | |
3104 | goto clean4; | |
3105 | } | |
3106 | #endif | |
1da177e4 | 3107 | spin_lock_init(&hba[i]->lock); |
1da177e4 LT |
3108 | |
3109 | /* Initialize the pdev driver private data. | |
3110 | have it point to hba[i]. */ | |
3111 | pci_set_drvdata(pdev, hba[i]); | |
3112 | /* command and error info recs zeroed out before | |
3113 | they are used */ | |
3114 | memset(hba[i]->cmd_pool_bits, 0, ((NR_CMDS+BITS_PER_LONG-1)/BITS_PER_LONG)*sizeof(unsigned long)); | |
3115 | ||
3116 | #ifdef CCISS_DEBUG | |
3117 | printk(KERN_DEBUG "Scanning for drives on controller cciss%d\n",i); | |
3118 | #endif /* CCISS_DEBUG */ | |
3119 | ||
3120 | cciss_getgeometry(i); | |
3121 | ||
3122 | cciss_scsi_setup(i); | |
3123 | ||
3124 | /* Turn the interrupts on so we can service requests */ | |
3125 | hba[i]->access.set_intr_mask(hba[i], CCISS_INTR_ON); | |
3126 | ||
3127 | cciss_procinit(i); | |
d6dbf42e | 3128 | hba[i]->busy_initializing = 0; |
1da177e4 | 3129 | |
ad2b9312 MM |
3130 | for(j=0; j < NWD; j++) { /* mfm */ |
3131 | drive_info_struct *drv = &(hba[i]->drv[j]); | |
3132 | struct gendisk *disk = hba[i]->gendisk[j]; | |
3133 | ||
3134 | q = blk_init_queue(do_cciss_request, &hba[i]->lock); | |
3135 | if (!q) { | |
3136 | printk(KERN_ERR | |
3137 | "cciss: unable to allocate queue for disk %d\n", | |
3138 | j); | |
3139 | break; | |
3140 | } | |
3141 | drv->queue = q; | |
3142 | ||
3143 | q->backing_dev_info.ra_pages = READ_AHEAD; | |
1da177e4 LT |
3144 | blk_queue_bounce_limit(q, hba[i]->pdev->dma_mask); |
3145 | ||
3146 | /* This is a hardware imposed limit. */ | |
3147 | blk_queue_max_hw_segments(q, MAXSGENTRIES); | |
3148 | ||
3149 | /* This is a limit in the driver and could be eliminated. */ | |
3150 | blk_queue_max_phys_segments(q, MAXSGENTRIES); | |
3151 | ||
3152 | blk_queue_max_sectors(q, 512); | |
3153 | ||
ad2b9312 | 3154 | q->queuedata = hba[i]; |
1da177e4 LT |
3155 | sprintf(disk->disk_name, "cciss/c%dd%d", i, j); |
3156 | sprintf(disk->devfs_name, "cciss/host%d/target%d", i, j); | |
3157 | disk->major = hba[i]->major; | |
3158 | disk->first_minor = j << NWD_SHIFT; | |
3159 | disk->fops = &cciss_fops; | |
ad2b9312 | 3160 | disk->queue = q; |
1da177e4 LT |
3161 | disk->private_data = drv; |
3162 | /* we must register the controller even if no disks exist */ | |
3163 | /* this is for the online array utilities */ | |
3164 | if(!drv->heads && j) | |
3165 | continue; | |
ad2b9312 | 3166 | blk_queue_hardsect_size(q, drv->block_size); |
1da177e4 LT |
3167 | set_capacity(disk, drv->nr_blocks); |
3168 | add_disk(disk); | |
3169 | } | |
ad2b9312 | 3170 | |
1da177e4 LT |
3171 | return(1); |
3172 | ||
3173 | clean4: | |
3da8b713 | 3174 | #ifdef CONFIG_CISS_SCSI_TAPE |
3175 | if(hba[i]->scsi_rejects.complete) | |
3176 | kfree(hba[i]->scsi_rejects.complete); | |
3177 | #endif | |
6044ec88 | 3178 | kfree(hba[i]->cmd_pool_bits); |
1da177e4 LT |
3179 | if(hba[i]->cmd_pool) |
3180 | pci_free_consistent(hba[i]->pdev, | |
3181 | NR_CMDS * sizeof(CommandList_struct), | |
3182 | hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle); | |
3183 | if(hba[i]->errinfo_pool) | |
3184 | pci_free_consistent(hba[i]->pdev, | |
3185 | NR_CMDS * sizeof( ErrorInfo_struct), | |
3186 | hba[i]->errinfo_pool, | |
3187 | hba[i]->errinfo_pool_dhandle); | |
3188 | free_irq(hba[i]->intr, hba[i]); | |
3189 | clean2: | |
3190 | unregister_blkdev(hba[i]->major, hba[i]->devname); | |
3191 | clean1: | |
3192 | release_io_mem(hba[i]); | |
3193 | free_hba(i); | |
1f8ef380 | 3194 | hba[i]->busy_initializing = 0; |
1da177e4 LT |
3195 | return(-1); |
3196 | } | |
3197 | ||
3198 | static void __devexit cciss_remove_one (struct pci_dev *pdev) | |
3199 | { | |
3200 | ctlr_info_t *tmp_ptr; | |
3201 | int i, j; | |
3202 | char flush_buf[4]; | |
3203 | int return_code; | |
3204 | ||
3205 | if (pci_get_drvdata(pdev) == NULL) | |
3206 | { | |
3207 | printk( KERN_ERR "cciss: Unable to remove device \n"); | |
3208 | return; | |
3209 | } | |
3210 | tmp_ptr = pci_get_drvdata(pdev); | |
3211 | i = tmp_ptr->ctlr; | |
3212 | if (hba[i] == NULL) | |
3213 | { | |
3214 | printk(KERN_ERR "cciss: device appears to " | |
3215 | "already be removed \n"); | |
3216 | return; | |
3217 | } | |
3218 | /* Turn board interrupts off and send the flush cache command */ | |
3219 | /* sendcmd will turn off interrupt, and send the flush... | |
3220 | * To write all data in the battery backed cache to disks */ | |
3221 | memset(flush_buf, 0, 4); | |
3222 | return_code = sendcmd(CCISS_CACHE_FLUSH, i, flush_buf, 4, 0, 0, 0, NULL, | |
3223 | TYPE_CMD); | |
3224 | if(return_code != IO_OK) | |
3225 | { | |
3226 | printk(KERN_WARNING "Error Flushing cache on controller %d\n", | |
3227 | i); | |
3228 | } | |
3229 | free_irq(hba[i]->intr, hba[i]); | |
3230 | pci_set_drvdata(pdev, NULL); | |
3231 | iounmap(hba[i]->vaddr); | |
3232 | cciss_unregister_scsi(i); /* unhook from SCSI subsystem */ | |
3233 | unregister_blkdev(hba[i]->major, hba[i]->devname); | |
3234 | remove_proc_entry(hba[i]->devname, proc_cciss); | |
3235 | ||
3236 | /* remove it from the disk list */ | |
3237 | for (j = 0; j < NWD; j++) { | |
3238 | struct gendisk *disk = hba[i]->gendisk[j]; | |
6f5a0f7c | 3239 | if (disk) { |
3240 | request_queue_t *q = disk->queue; | |
3241 | ||
3242 | if (disk->flags & GENHD_FL_UP) | |
3243 | del_gendisk(disk); | |
3244 | if (q) | |
3245 | blk_cleanup_queue(q); | |
6a445d3b | 3246 | } |
1da177e4 LT |
3247 | } |
3248 | ||
1da177e4 LT |
3249 | pci_free_consistent(hba[i]->pdev, NR_CMDS * sizeof(CommandList_struct), |
3250 | hba[i]->cmd_pool, hba[i]->cmd_pool_dhandle); | |
3251 | pci_free_consistent(hba[i]->pdev, NR_CMDS * sizeof( ErrorInfo_struct), | |
3252 | hba[i]->errinfo_pool, hba[i]->errinfo_pool_dhandle); | |
3253 | kfree(hba[i]->cmd_pool_bits); | |
3da8b713 | 3254 | #ifdef CONFIG_CISS_SCSI_TAPE |
3255 | kfree(hba[i]->scsi_rejects.complete); | |
3256 | #endif | |
1da177e4 LT |
3257 | release_io_mem(hba[i]); |
3258 | free_hba(i); | |
3259 | } | |
3260 | ||
3261 | static struct pci_driver cciss_pci_driver = { | |
3262 | .name = "cciss", | |
3263 | .probe = cciss_init_one, | |
3264 | .remove = __devexit_p(cciss_remove_one), | |
3265 | .id_table = cciss_pci_device_id, /* id_table */ | |
3266 | }; | |
3267 | ||
3268 | /* | |
3269 | * This is it. Register the PCI driver information for the cards we control | |
3270 | * the OS will call our registered routines when it finds one of our cards. | |
3271 | */ | |
3272 | static int __init cciss_init(void) | |
3273 | { | |
3274 | printk(KERN_INFO DRIVER_NAME "\n"); | |
3275 | ||
3276 | /* Register for our PCI devices */ | |
3277 | return pci_module_init(&cciss_pci_driver); | |
3278 | } | |
3279 | ||
3280 | static void __exit cciss_cleanup(void) | |
3281 | { | |
3282 | int i; | |
3283 | ||
3284 | pci_unregister_driver(&cciss_pci_driver); | |
3285 | /* double check that all controller entrys have been removed */ | |
3286 | for (i=0; i< MAX_CTLR; i++) | |
3287 | { | |
3288 | if (hba[i] != NULL) | |
3289 | { | |
3290 | printk(KERN_WARNING "cciss: had to remove" | |
3291 | " controller %d\n", i); | |
3292 | cciss_remove_one(hba[i]->pdev); | |
3293 | } | |
3294 | } | |
3295 | remove_proc_entry("cciss", proc_root_driver); | |
3296 | } | |
3297 | ||
33079b21 MM |
3298 | static void fail_all_cmds(unsigned long ctlr) |
3299 | { | |
3300 | /* If we get here, the board is apparently dead. */ | |
3301 | ctlr_info_t *h = hba[ctlr]; | |
3302 | CommandList_struct *c; | |
3303 | unsigned long flags; | |
3304 | ||
3305 | printk(KERN_WARNING "cciss%d: controller not responding.\n", h->ctlr); | |
3306 | h->alive = 0; /* the controller apparently died... */ | |
3307 | ||
3308 | spin_lock_irqsave(CCISS_LOCK(ctlr), flags); | |
3309 | ||
3310 | pci_disable_device(h->pdev); /* Make sure it is really dead. */ | |
3311 | ||
3312 | /* move everything off the request queue onto the completed queue */ | |
3313 | while( (c = h->reqQ) != NULL ) { | |
3314 | removeQ(&(h->reqQ), c); | |
3315 | h->Qdepth--; | |
3316 | addQ (&(h->cmpQ), c); | |
3317 | } | |
3318 | ||
3319 | /* Now, fail everything on the completed queue with a HW error */ | |
3320 | while( (c = h->cmpQ) != NULL ) { | |
3321 | removeQ(&h->cmpQ, c); | |
3322 | c->err_info->CommandStatus = CMD_HARDWARE_ERR; | |
3323 | if (c->cmd_type == CMD_RWREQ) { | |
3324 | complete_command(h, c, 0); | |
3325 | } else if (c->cmd_type == CMD_IOCTL_PEND) | |
3326 | complete(c->waiting); | |
3327 | #ifdef CONFIG_CISS_SCSI_TAPE | |
3328 | else if (c->cmd_type == CMD_SCSI) | |
3329 | complete_scsi_command(c, 0, 0); | |
3330 | #endif | |
3331 | } | |
3332 | spin_unlock_irqrestore(CCISS_LOCK(ctlr), flags); | |
3333 | return; | |
3334 | } | |
3335 | ||
1da177e4 LT |
3336 | module_init(cciss_init); |
3337 | module_exit(cciss_cleanup); |